Relative text position inside a frame is not saved for scores imported from 2.x
1- Load attached score "frametext_v2.mscz"; no matter if you choose to reset or not in the dialog which appears; note the relative positions of text inside the frame;
2- Save it with another name;
3- Open this new file: some texts lose their relative positioning inside the text frame.
Here is how the file appears on import:
and here how the saved file appears:
Windows 10, commit 66c38772
but also under Linux Mint 19.3 and for stable version 3.4.2