OK. I stand corrected. But my 9 years AS experience has taught me......
You may be able to use these formats to transfer some of your data through, but you are going to spend a lot of time to make it usable. It won't be something you can rely on for ongoing projects.
If you come to produce your fab pack and you get errors / crashing I can guarantee you this is something to do with your imported data. When you need to get your project issued and you are fighting against the system you will realise that you would have been quicker to start from scratch, or you may even end up starting from scratch.
Never import anything into your AS model files. I have learned this the hard way.......
Although saying that, I believe that every single error has been repaired between my AS2018 and latest AS2025 so my experience is probably no longer valid.