Use the MOVE extension.
1 2017-12-04 20:49:38
Re: Action Request: Copy files to another location, then delete originals. (1 replies, posted in Feature Requests)
2 2017-12-04 20:47:52
Re: Just rename a file before moving... (1 replies, posted in Dropzone Support)
Also looking for this! It seems John uploaded a script for this a long time ago, but it's disappeared...