How to switch from an activity app to watchface and then back

developer.garmin.com/.../System.html

In the firmware/system, you'll have a shortcut/hotkey for "clock" (on 5 button devices, I typically use a long press of the lower right button).

When running a ciq app, just use that shortcut/hotkey. No changes to the CIQ app..

You can try it with this one of mine:  https://apps.garmin.com/apps/116a5b59-29ae-4397-a70e-907d7e5f8e44

Thanks. I switch to the watchface.  But how do I get back to the app?  If I use the back button again or the START button, it looks like the app had exited and the app restarts anew.

Have you tried with the app I linked to?  Is your app recoding an activity?

I haven't tried your app yet.  My app is recording to the FIT file.

OK. I just tried your app.  It behaves the same as mine.  Pressing BACK again or START seems to restart the app anew, rather than continue from when I switched to the watchface.

If you are trying to do something like your own long press logic, that can cause problems

It doesn't start the session until you get GPS and press start.

Which Garmin are you using?

Yes I understood that.  I pressed start after acquiring GPS.  Then switched to the watchface, then tried to switch back to your app, and it restarted anew.  Using a F7s.

Is the FW on your f7s up to date?  Sounds like a bug there, as this works fine for me on other devices.