Multicam Sequence Gone

Hello, I'm going to try and word this as best as I can.  I don't usually edit in multicam so my workflow may not be the best.

I created a Sequence and placed 5 cameras in it and synced them.  I created a nest with those and enabled Multicam.  Through out editing, I've always been able to go into that sequence to see the stack of layers and could edit say color in there.  I did add a lumetri correction to one of the layers.

Today I noticed I cannot find that sequence where I can see the stack of layers.  I've checked in every bin and it is nowhere.  When I double click the nest, which would usually open that sequence, it now just brings it up in the source window.  Without having access to that sequence, does that mean I cannot adjust any lumetri on those clips? 

Is there a way to restore that sequence?  Even the previous autosaves are missing this sequence.  Again, this could be a workflow issue on my part but I don't know why the project is different than it was before the weekend.