Elements with extremely large manual adjustments should have autoplace disabled on import
I have no doubt that the new algorithm for automatic placement in v.3 is an improvement, but for files created under v.2, it always creates problems, since my carefully placed text blocks and such are now automatically placed when I open them i v.3. I've now made a habit of (a) declining any suggestions to reset positions, and (b) select all text blocks etc. and untick the "Automatic placement" box. It's a tedious job, though, and since the algorithms are clearly incompatible between v.2 and 3, this should probably be the default behaviour when opening v.2 files in v.3.