Merging fixtures in Hog 4 show on Hog 3

Again, not sure if this should be here on in the Hog 3 forum.

Moved a Hog 4 show onto Hog 3, then needed to Change Type.
Of course the fixture profiles are not in the show file, so tried to merge into show from library, but can't because its a different major revision.

So the only way to do this is load into Hog 4 PC, swap fixtures, then load back onto the Hog 3. OK it works, but it's longwinded and frustrating.

Is it possible to fix this so we can merge on the 3?

Leggy.