Yes, there is 'any method' (see also here) and it goes as follows:
- Make sure you have both Prime 3.0 and Prime 7.0 installed on the same PC.
- Open the file with Prime 7, and start Prime 3 alongside.
- Copy regions, one by one, or a few by a few, in the Prime 7 file, and paste them in the sheet of Prime 3.
- Keep your fingers crossed that Prime 3 does not crash, so save the sheet in Prime 3 several times during the process.
- In the end, save the Prime 3 sheet to the end destination file.
You may want to try to enclose all your regions of the Prime 7 sheet into a single 'area'. Then close that area. Now all your regions are assembled in a single region: the area, which you should be able to copy over to a/the Prime 3 sheet. If successful save the sheet. Then, in Prime 3, move all regions out of the area.
Of course, if you used any features of Prime 7 that are not available in Prime 3, these features will not work in Prime 3 (and you may hope they don't cause a crash in the copying process).
Note that PTC did not provide any version of Prime with the capability to save a sheet to a previous Prime version. There seem to be no plans to do so either, probably because 'nobody needs this' ?
Success!
Luc
