Cleaning out clone dvds "cache"

I create a folder to dump the video ts folders of stuff I want to burn to a dvd from files on my hard drive, burn the first dvd after creating that folder just fine. then I delete those files because I am done with them. put NEW files in that same folder, once again I point clone dvd at that folder BUT it still has the (or should I say is ready to) burn another copy of the dvd I just finished making, is there any way to either A) tell clone to RE-read that portion of the hd to realize there are NEW files in that same path, or to clean out the old dvd I already burned? or do I have to create a new directory for every dvd I burn from my HD? right clicking on the file in clone does not give the option to delete the old file out of clone. any ideas? thanks