Seeing as you guys have started to respond quickly and usefully…
If I took the latest 3.x build and installed it over my trusty 1.5.7 that handles around 1.5TB of Google Drive folders and files. Can I expect the transition to take less than a fortnight at home broadband speeds and also can I count on not loosing any data through cloud and/or local deletions? Because my initial 3.x experience burnt me terribly.
Linux Mint 19.3, fully upgraded/patched etc
1.5.7 to 3.x initially cost me data and many, many days, plus 3.x not exactly working in the same way as 1.5.7
Going back to 1.5.7 was trouble-free but took weeks of sync/download/upload at home broadband speeds.
What I am after is installing 3.x and it figuring things out in reasonable time without any data loss or excessive UL/DL. It also needs to pick up settings and work exactly the same as 1.5.7 - no point in upgrading if I have to stand on my head and wave arms counterclockwise seven times before I have the same environment.
None of the 3.x versions so far qualified.