Projects no longer work after slicer update

Hello,
I hope someone here knows a solution.
Here’s what we received today: the A1Mini, so I updated to the latest slicer version. That wasn’t necessary the whole time because we only had the P1P’s and so far we had achieved that without any problems for our purposes.
After the update I can open/edit/send saved projects. The files were also printed, but all that comes out is plastic scrap, neither the supports nor the spacing of the data, etc. are correct. Today I tried and tried. Without success, so I went back to the old slicer version and can now print all projects again without any problems, except that this version doesn’t know the A1-Mini, so I tried the whole thing again, using the latest version. Again, not a single usable print comes out of it. The P1P are of course selected etc. The settings are also all correct, I wrote them all down and compared them, everything is the same.
I then went back to the old 1.6… and can now print the required projects normally again, but without Mini…
Is this a known problem?

Same is happening to me, new slicer has failed a few prints, just printing mess out.