That’s different from your previous description.
Thing is, as every possible variant we tried works here, in order to find out what goes wrong at your place, we need to be very picky and specific in describing each step in great detail, otherwise we cannot help.
To recap, there are two distinct file formats, one is vlsprj (with an ‘s’), that is called a media project and is the only format Cubase can export for VST Live. This is read by VST Live via the “Import Media Project” function in the file menu. Assuming we’re clear about that:
After importing this media project, and provided that tempo data are present when archiving, if you now apply “Save Archive” and don’t move, rename or change any files, then copy created folder and move it anywhere, opening the VST Live project (vlprj) file with VST Live always works, regardless of how it was created in the first place (new, or import from Cubase). Even transfering the media project works (you may try that too).
If (or as?) it does not in your place, but we still don’t know what exactly you do, we cannot help.
I suspect that there are side issues that you don’t mention. For instance, maybe the media project that you import has been exported with an older version of VST Live. Or, you are exporting or archiving to folders that already contain data. Or something else gets in the way, you always show larger projects with audio etc; in order to narrow the cause, you need to exclude every possible pitfall and
- create empty project in Cubase
- add tempo track and events, nothing else
- export via VST Live/Export Media Project into an empty (!) folder
- close Cubase, open VST Live, new project
- import media project
- save Archive.
Whatever I do with saved archive, it will always show tempo track data, on any machine in the world.