...per your comment on the question...
pax -rws'|\.JPG$|.CAP.JPG|' /root/of/copied/tree /dest/path If .jpg and .JPG are your only issues, that should just work.
If the problems turn out to be more profound after all, though, it may also be of interest to you that pax supports...
-iInteractively rename files or archive members. For each archive member matching a pattern operand or each file matching a file operand,
paxwill prompt to/dev/ttygiving the name of the file, its file mode, and its modification time. pax will then read a line from/dev/tty. If this line is blank, the file or archive member is skipped. If this line consists of a single period, the file or archive member is processed with no modification to its name. Otherwise, its name is replaced with the contents of the line.paxwill immediately exit with a non-zero exit status if EOF is (CTRL+D) encountered when reading a response or if/dev/ttycannot be opened for reading and writing.