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I start with a directory osticket from 1.6.1. This contains a directory include. My site is in/opt/lampp/htdocs/csportal/osticket/Once I've done the upgrade to 1.9.1 can I delete all php files in the "include" directory under .../osticket/ that are not in the directory "upload/include" from the 1.9.1 distribution?I won't actually delete them: I'll just move them somewhere else as I might need some bespoke code from them.Mike