FastTrack Schedule files are upward compatible from FastTrack Schedule 10 to FastTrack Schedule 2022.
Due to the volume of enhancements and new features in FastTrack Schedule 2022, files are not backward compatible with FastTrack Schedule 10.
FastTrack Schedule 2022 files are upward compatible with more recent versions of FastTrack Schedule 2022 (with a higher Build number), but not the reverse.
In summary, a file saved in Build 2594 can be opened in Build 2625, but a file saved in Build 2625 cannot be opened in an earlier version, such as Build 2594.
Files saved in FastTrack Schedule 2022 for Windows are cross-platform with Mac and vice versa. The Build numbers follow the same rules above.
The Build number can be found in the About dialog.