Proxy Objects

[owen66]

is there a list somewhere that details changes like you see here:

https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Error-...

always been curious about proxy objects and such and just never looked into it.

[TheCADnoob]

I havent come across a list but think it would be neat. 

my guess is that its not list triggered but a comparative recognition type thing where the format reports an a unrecognized object in the database.