I have been using PM5 ON Mojave 10.14.6 and both PM5 and PM6 seem to have problems which make it near impossible to use. For instance on both the Find function will in fact find a number of images with the expression. However, when the same Find and Replace is attempted it either does not find anything, or in some cases has found and replaced thousands of bits of data. I am now left with a whole lot of images with surplus data in the Special instructions field which I will have to remove manually one record at a time. If the problem is with PM5 and PM6 can get rid of it but if it is in both then I would have to stop using PM which to be honest I would rather not do.
I have attached a zip file which might help you with troubleshooting.
Any help with this would be appreciated
Frank