Editing song in Presenter to change max lines per slide replaces custom slide labels

When creating songs in Planner we add custom slide labels (e.g. Verse 1, Verse 2, etc.). However, these are replaced when editing the song in Presenter if we change the number of lines per slide - which splits the existing slides across more slides.
e.g. instead of the two slides of Verse 1 becoming Verse 1a and Verse 1b, the labels become Slide 1 and Slide 2 which is less helpful when reviewing the song.

Am I doing something wrong?

Please apply these slide labels first: https://www.worshiptools.com/en-us/docs/23-song-slide-labels
The "labels" in Planning are just titles per each section. They don't help with the smart reformatting

Thanks for the reply, WorshipTools.

I don't see a way in add existing slide labels from Presenter in the Planning app. Is it possible?

Only in Presenter

Having added several songs in Planner, it's frustrating to have to go into Presenter to re-add the 'proper' slide labels for each slide - this is needed so that we can change the max lines intelligently. Can I make a feature request to allow us to choose the slide labels from Presenter in Planning?