Coping the mainnet on another pc

Hello, i built a new pc and installed ubuntu 20.04 with the newest chia. I am havi ng a new problem that i never had before…
Trying to shortcut the syncing and copying the mainnet from another pc with same OS and same chia version. But when i do it it does not sync. I copied first only the mainnet file. Than copied the 6 files but still unsuccessful…
Any thoughts?