I used the Shearwater Cloud app (installed on my desktop PC, Win 11) to download the dives. This was pretty easy to do & it was easy to edit info on each dive for location, buddies & such.
I then had the same app on my android phone connect to the cloud & it synced everything, easy.
Next up I tried to use the Subsurface app on my PC. That was unable to find my Peregrine via BT. It does see my BT headphones but not my dive computer. So that app is useless to me at this point, at least for connecting to the Peregrine. Possibly I'll find a way to correct the connection issue & be able to check it out as well. Looking at its UI it does look like a pretty good app.
Now I just opened the Subsurface app on my phone & it's attempting to connect. It looks like this is downloading the dives. Maybe once it has all the dives I'll be able to sync them to the desktop app, will see in a bit.
Shearwater support has emailed me with some things to look at. I have 5 dives planned next weekend so will be paying better attention during any safety stops to see what it does.