Hi @salvo!
The good news is that the backup/export and import systems in the new app are extremely reliable, and much faster than in the old app. So you could do a complete export before deleting, then import from that after reinstalling.
It’d still take tens of minutes, or over an hour at the outside, but it’s entirely hands off, no attention required. Can just leave it doing its thing (probably best to have the phone plugged in to power, just in case it runs out along the way).
For your solution to the stores problem, yeah your interpretation sounds very plausible. I’ve had the same problem with a bunch of apps myself over the years (I’ve periodically switched between New Zealand and Thailand App Store accounts). It’s a hassle, but the temporary store switch always fixes it.
Though the thing I’m curious about is… if it’s an ongoing subscription, will the app keep getting told about renewals? I’m suspecting not. I suspect what’ll happen is it gets awareness of the current month/year cycle then nothing after that. So you’d have to repeat the process every month/year. Frustrating!
In which case I think the ultimate solution might be to do this store switch trick once, then cancel the old subscription, then once it’s just about to expire start a new subscription in the new app, in the country store that you want it in going forward.
Oh final thought! You’ll definitely want to cancel the free trial you’ve got first, so that that doesn’t accidentally start charging you. No sense in paying twice!
Ok and now another final thought. I might be overly pessimistic on the new app not seeing updates to the old subscription each month/year. The RevenueCat middleware system does get told about subscription updates directly from the App Store, and it should have your account all linked up regardless of which store you’re currently on. So in principle it should actually be fine, no extra fuss required.
Though I think ultimately the tidiest outcome would be to start a new sub in the new app, once the old one expires. But yeah, it’s possible that won’t actually be necessary. In principle. Heh.