Yes. Once imported it becomes native Solid Edge data. Just insure that when it imports, the surfaces stitch into solids. Depending on the translator, I typically use the "Heal and Stitch" option.
Yea you can, though you'll have to convert it to Solid Edge data and build the FEA connections up as you would normally.
Once it is converted to SE bodies you will be able to mesh them as if they were created nativly, plus if you use Syncronous, you can modify them easily to iterate the design-analyse-redesign-reanalyse.... process.
I have ship structure with many parts. I can not set connectors automatically. So I thought that the problem may be of the imported geometry.