Hi Praveen, I've never used Adept. What files are you trying to migrate in EPDM? Just Solidworks files, autocad, PDFs, office files etc?
Data migration of any sort is always tricky, as you need to have the destination environment set up correctly. Ie in EPDM you'll the correct users, groups, permissions, folder structure, data cards etc set up.
Also, bringing metadata over can be a challenge. Is there metadata in the files stored as properties or attributes? or is it stored in a database or spreadsheet?
If you do need any help or advice, my company does consult on data migration services amongst others.
It's possible - I've performed an Adept migration. Contact me if you'd like to discuss it.