Question : Cisco CallManager 4.2 upgrade to 7.0(2)

I am working on a CCM 4.2 to 7.0(2) upgrade.  I cleared out all the CDR data before I ran the DMA tool.  The DMA tool finished in about 20 minutes successfully.  Every time I have ever run this before the DMA tool has taken hours to run - like 3 - 5 hours to run.  What has everyone else' experience been with running the DMA tool?  I have done this several times.  This one probably came back much cleaner than most, so maybe the cleaner the data the quicker it takes.  It just seems like it ran awfully fast for something not to be wrong.    What are ya'lls thoughts on this?

Answer : Cisco CallManager 4.2 upgrade to 7.0(2)

Turns out there was no problem with it.  DMA finished in 20 mins with a13 gb file and the data loaded just fine.  It just made me nervous given that I have seen it run for 5.5 hours before.