BP Node Network Disappeared
I had a simple BP rigged up with a static mesh component that lowers after crossing a box collision component via a Timeline. Everything functioned perfectly. I've just noticed when I crossed this same trigger that nothing happened. Upon investigating I found that every node in my event graph is missing except the Event BeginPlay node.
I also have the variable for the static mesh's initial location in the Variables panel, and I have the Timeline's graph accessible in my tabs in spite of having no node for it any more.
On an odd side note, my box collision was moved further along the Y axis as well. I hadn't tampered with it any since completing it, so unsure what cause this to occur. I can recreate my network quickly enough but figured I'd mention this happened here for posterity.
An easy explanation is that you have opened a different (and older) level instead of the one you were working on. If you don't set the Editor starting map in your Project Settings Maps and Modes the engine will open a default level and not your latest one.
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