When I upgrade to ips5 how will it work if I’ve got an ips4 app that I can’t uninstall due to data I want to keep for it

I plan to have it made compatible with ips5 so I will be able to upgrade the app but it will still be an ips4 app when I do the forum upgrade. Will I still be able to upgrade to ips4 with this app / would it need to be disabled

The application will cease to function but you will still be able to upgrade. Many applications will need to go this route as you can’t install version 5 files prior to being on version 5 so we have to allow for data to persist while disabling the version 4 application files.

50 minutes ago, marklcfc said:

I’ve got an ips4 app that I can’t uninstall due to data I want to keep for it

You can always make a backup of its data, database and files alike.

Even backing up the app’s tables might not be enough. Some apps may have permissions, attachments, achievement rules, etc, and those are stored in core tables.

The best option is to leave the app installed. The upgrade to v5 will disable it and retain all the data.