THE PROBLEM
Supplying xml, ipj would not be a problem (xml form 2012 you already have, and other than "materials" and "colors" the other do not affect modeling environment)..
.idcl can be more tricky, because I cannot disclose all details of our ccLibraries. Nevertheless I could prepare a special version of 2012 idcl files with information that can be disclosed, files that would give the same problem at a migration to 2013.
Since I have the feeling that no other companies are experiencing this specific problem, and we could not roll back our whole company again to 2012, I patiently begun repairing those members where the materials have been lost, starting from the ones that we use more (like bolts and nuts). Couple of hours a day since when the problem came, I'm already by 30% of our libraries. Of course I could also not wait for a fix from Autodesk, that for obvious reasons would need much more time.
Nevertheless I'm ready to cooperate if this helps bringing the situation forward, but this would mean for me to invest additional time in solving a problem that lies on Autodesk side. Here comes in the "Surroundings" point...
THE SURROUNDINGS
When I moved to this company (middle 2011) I immediately realized that the use of inventor was kind of peculiar: the program, even with subscription for each workstation, was used to less then 10% of its potential (bill of materials written manually, no content center at all, no idea what XML libraries are, modeling strategies as they where in 2004, even the templates were from several editions before and so on). After 1 month that I was here, the CEOs assigned me to start working on the improvement of the system and on the training of employees.
Being previously (2002 to 2011 in Italy) involved in the promotion and training of Inventor, I also started investigating the reasons for this situation. When asking direct questions to my colleagues (even those who are here since 15 years) the only answers coming where like "it has always been a nightmare with this companies selling autodesk products" (as a matter of fact we are talking about 1 company).
In November 2011 the "specialist" form this company taking care of us has visited us a couple of hours in order to explain to our guy (that he thought to be our inventor specialist) how should he build and arrange the content center. By that time our content center was already beyond 50.000 members (but he didn't know) so I listened to him as a "guest" more to understand how much "specialist" he was (not all information he explained were 100% correct and up-to-date but that is another story). We even had to pay him for the visit. Never seen him any more.
My investigation went further, and the most surprising detail that I discovered is that actually in Germany there is only one reseller for Autodesk products. That explains also why in all Germany there is only 1 text block for drawings (I swear: I saw exactly the same text block in so many different German companies). This text block was used before by this reseller in AutoCAD: they just copied (forget about inventor layers, text styles, inventor features) and pushed this same template in all Germany (unfortunately Germans have much to work so nobody invested time in customizing the text block). I don't need to tell you that the revision history philosophy integrated in this text block has nothing to do with Inventor revision history (again: everything gets written manually). So the illness of inventor in Germany and the potential reason why Autodesk might be loosing market shares is the "monopole situation" that somehow came out.
Knowing that Autodesk EMEA Headquarters are here in Aidenbachstrasse 56, that is not farther than 40 min by car from us (35 min with the subway) I even tried to get in touch with these people: I personally spoke to Christian Lang (Sr. Director Manufacturing EMEA) when I met him in Italy in November 2011... I tried to inform Andreas Hofherr about the funny situation... neve heard anything them (even thou Christian asked my business card and promised to react). Finding much more and better support through my connections in Italy, I gave up with these people here, because I could anyway achieve the goals that my CEOs gave me.
So the situation was the following: our "Autodesk Monopolist Reseller" kept showing up once a year when the time for paying the subscriptions came (of course I wouldn't leave 20.000 EUR on the road... 😉 ). When we let him think that we might purchase a "Plant Design Suite" then he came here for a visit, and we explained that we are absolutely not satisfyied with the "support" that we get from them. He immediately offered to support us on those questions that we cannot solve alone (unfortunately those questions are terribly specific, and 99% related to program malfunctionings). Since that time there have not been any further bottlenecks in our development, until....
15.12.2012
When we first attempted the migration to 2013 the big fatal crash that brought me to this post came out. I didn't sleep 3 days to identify the issue and roll back... (the story we know already). Thanks God YOU from USA reacted to my problem, and I felt somhow that somebody from Autodesk was still supporting us, so now we are migrated, almost succesfully. Having some years of experience in IT, I could immediately figure out that the issue was not possible to be solved by local people, and after a few days you confiremd that a bug was found and a fix would have come. Anyway I gave a chance to our local friends to try to support us (once again: more to test them, rather than to obtain a real support, because for supporting us it was already too late). Of course I gave them ALL information in my hands (included the link to this post), exactly as I did with you.
Beside reacting more than 1 month later (sending the standard instructions for inventor material library migration
), I was quite surprised that the further reaction was:
one day one guy from this company called me on the phone and wanted to tell me how to migrate properly our appearances and materials (because trying to do it themself and get the .adsklib files brought them to the same crash
). From his instructions I immediately understood that he had no idea what we had discussed here in this post more than 1 month before, so I invited him to get to the post and read what was going on in order to be all at the same point. His answer was: "I think it's better that one of us comes by at your place (20 min driving from where they are) and checks the situation personally with you. Have a nice day". Never heard from him any more. Never seen any of them any more (probably they even do not know that SP1.1u2 came also because of our issue, but I might be wrong on this since there is no feedback from them).
I think that you understand that, having other assignments here, I am not very keen to invest time twice, with people who do not read in advance (so it not twice but 3 times more), just for testing the local Autodesk support team. So I am not very happy in wasting 1 hour if one of these guys comes here to do... what shall he do here?? Yes of course: issue an invoice for having been here 
NOW
As you said yourself we have a quite high level of customization and we are using inventor really deeply into some of its features. For us it will be more and more, as that is one of my assignments. It is also clear, that the information that Autodesk might collect with us could be quite precious in improving the product. We are ready to support you in this challenge, even if that would cost us some time (to your information we use inventor in English language). I am ready to move, to share our experience (as long as I am allowed to do it), I can meet you here or even there in USA (ok, that would be much more expensive for us so we should discuss it) but this moves must be done on both sides, and of course they cannot happen through the local reseller.
We should not forget that Autodesk EMEA is here 30 km away.
I do not know if you have the power to move Autodesk people here... that is up to you (i mean "you" marketing strategist rather than "you" technical support people).
So... that's the story....
...just let me know how it goes on by you 😉
Massimo Frison
CAD R&D // PDM Admin · Hekuma GmbH