Fluid box layers are locked

Hello,

I'm dealing with a project where I have narrative text that a user can make appear or disappear by clicking a button. That functionality is working fine, but for some of the slides I can't bring the object forward. The slides affected have fluid box layers that can't be locked and are greyed out and within bold lines on the Timeline.

This isn't occuring on other slides and on those I am able to get the blue text box object to be the foremost object, but only if those slide somehow have objects on them that are already above these grouped objects. 

Does anyone know why this is happening or how to fix it so I can move the object above that group?

Thanks 🙂