I've seen multiple threads on this topic, however where I am stuck is I cannot pull in 'Epic Status' field into my filter.
When I try to use Epic Status in my filter search, I get a warning message that reads "Epic Status is not applicable for the current project and/or issue type". This appears to be limiting me from changing a 'Done' Epic back to Open status.
My end goal here is to get this one Epic marked as 'Done' (was marked accidentally) to reappear in my Epics pane and also relate Stories and Tasks to it again.