Long file paths in OneDrive for Business

Hello,

I am in the middle of a data migration (server to OD4B). There's an issue that occurs frequently and it's about the long path. Basically I tried every workaround I found, but nothing happened. Moving the files to a new partition, mapping drives, mapping the OD4B folder (via explorer), syncing the files via web, via explorer etc..

Any suggestions?

P.S. I'd like to avoid third part tools.

cheers