I just created a new mailing list for my organization, and because we have exclusive emails going out to contacts that meet different criteria, I wanted to ensure that the contacts in this new list do not exist within any other list.
Usually, I would enter the list's contact management screen and Select-All, and then using the 'Manage Lists > Remove from Lists' option, I could easily make sure this group of contacts is removed from other, overlapping lists. Something has changed in the interface and now it will not allow me to do this, because instead I get a message stating "Your selected contacts are in use." I assume this message was added to warn me against modifying a list that has a scheduled deployment, but this is almost hilariously wrong for two reasons.
1). I have no intention of removing contacts from this list, I am trying to use this list to mass-remove these contacts from other, conflicting lists. This message prevents me from doing so and leaves me with the only option being to cancel deployments and recreate them after the list modifications I need are done.
2). It does not even prevent the modification of contacts on this list, since 2 inches to the left I can choose the 'More Actions > Remove from list' option and wipe this list clean if I choose. As such, I can see no purpose to this message except for adding a significant amount of effort to the task I'm trying to complete. Please remove this message and review the thought process that led someone to think it was a useful addition.