Is `krename`'s regex broken, or am I bad at it?

The reason that I’m trying to do it this way is that I sometimes have multiple operations to perform upon the entirety of the filename, and the only way to schedule such operations chronologically. Importing scheduled operations also necessitates the XML file that the find-and-replace window creates:

([year][month][day]T[hour][minute][second].#{0;1}+0000)