>I think that the save is going to be significant, but it's up to you to test.

Presently, it takes 0.0156 second for an update to be done. When I multiple that for a batch of 100 records, this takes 1.56 seconds. If a batch update of 100 records can be done in 0.5 seconds for example, that would represent something along a 1 second save for every 100 records representing a saving of about 10000 seconds for 1 million records. That would be a saving of about 3 hours. I have 4 million records to process. If I could reach this target, this would be a saving of about 12 hours. Presently, the entire process is schedule to take 55 hours. So, I could bring it down to 43 hours.