Due to lack of care or perhaps understanding I messed up combining projects together and deleted an input source that I thought I wasn't using. I'm still not completely sure how but I ended up with scenes containing modules in which all their sources were disconnected.
There are two ways I can think of that might avoid me making this mistake. First, a check and a warning when deleting input sources if they're being used in any scenes. Second, a way to assign input sources to a number of selected modules.
Input source mistake
Re: Input source mistake
Ok, although for that exact purpose there is the "Remove Unused Sources" option in the Input Sources drop-down menu.