Is there a way to search by filename in Copy Tree like PNG?

In PNG I can search by filename and deselect a group of files from the list.  I cannot find the same functionality in Copy tree.  Is it hidden somewhere?  We have 2 sets of drawings at the end of a project.  One is ours, and the other is what we provide to the customer.  When I duplicate a project, I do not want to duplicate the customer drawings, but going thru and individually deselecting the files isn't reasonable.  In PNG, I search for a piece of the filename and uncheck.  What do I do in Copytree?

I read Jeff's blogs about using the toolbox marker, but that doesn't apply here.