Integration with Obsidian Full Calendar Plugin

I am curious what your use-case is. Would you care to elaborate?

If the goal is to schedule notes in Obsidian using Full Calendar, there would be some conceptual issues to iron out first, although I personally don't see any satisfying solution for them:

Morgen currently ignores the scheduled date in Obsidian, because Morgen is more feature rich (allowing 1 task to be scheduled multiple times; great feature btw.), and keeping the task in obsidian in sync with Morgen would therefore be impossible. The same logic would apply to notes. Full Calendar does not support scheduling the same note into multiple time-slots, therefore syncing Morgen and Full Calendar would impossible, barring an update to the Plugin itself, but I would not hold my breath, as the plugin has been unmaintained for some time now.. (which is another argument why this should probably not consume any valuable development time from the Morgen developers..).

If the aim is, to have a note for a calendar event, I think the best way currently would be to create a note in obsidian, and paste the link to that note into the description of the calendar event in Morgen.

EDIT: Another way the sync of the scheduled date/time could work, would be this: The first scheduled time/date across all not-complete work sessions of a given task syncs back to the obsidian task. If the final work session is completed, the scheduled date stays unchanged. I wrote my thoughts in more detail here: https://morgen.canny.io/feature-requests/p/obsidian-integration-scheduled-dates