Indeed, a newly surfacing unresolved issue...these things come up as we are healing and ready to deal with them. It is not an "I am fixed" healing...it is a process and it takes alot of time. That is one of the most distressing things about it...you go along doing well and then bam, something else to deal with. But my T says they come for 2 reasons...1) you are in a place where you are ready to handle it & 2) You are in a place where you feel safe enough to handle it.
I hope this helps in some small way...