UNSUSPECTED PROGRAM CHANGE IN SFZ+

I inported some old .wrk files. When I play the project, one of the patches gets changed. I looked every where, including the event list, but could not find anything that would cause the atch change.

So I copied the problem track and pasted it into a new project.  Voila, there was no patch change.

Apparently there is something in my .wrk files, but I can't find it to delete it.

Can some please help me resolve this problem because I have a lot of .wrk files and copying all the tracks into another project would be very time consuming. 

Olushola