I have a prefab with an FSM on that uses a template. Say the FSM has a public GameObject variable called Marker.
IF I edit the template so that Marker is now called Location, the template doesn't update in the prefab. I can hit refresh and it'll update as expected, but it won't save this refresh. If I close the prefab, then open it again, it will have Marker, not Location.
To fix this I have to refresh, and then modify a transform or another value to get the change to save to the prefab.
Unity: 2018.3.2f1
PlayMaker 1.9.0.p7 and p9
I have sumbmitted a bug with the same tile at this post via the PlayMaker/Tools feature.