@Mff73 thank you for your answer! Full data is not in the watch anymore. However, resetting the app shows the workout again, so it is not deleted from my account.
But the problem persists: whenever i try to edit the tags and save it, the workout is “hidden” completely in the device used for editing, including effects on CTL etc. This happens on my phone aswell as on my tablet. Resetting the app shows the workout again, although with the old tags … is that possibly a bug or a problem with that specific workout?🤔