Ok, here's what I've found out. The problem SEEMS to be related to the character sequence of [0-9]:[0-9]
As an example, here's a sequence that works with no problems:Battery 1 XXXXXXXXX 01/18/2010 10 (Installed 3/10/2010 14J25J28) Battery 2 XXXXXXXXX 11/26/2009 10 (Installed 03/05/2010 11J35J10)
Now, here's a really strange one. Take that same line and change one character "J" to a colon ":" and we get: Battery 1 XXXXXXXXX 01/18/2010 10 (Installed 3/10/2010 14:25J28) Battery 2 XXXXXXXXX 11/26/2009 10 (Installed 03/05/2010 11J35J10)
And right after the "Save" option, it changes to this: Battery 1 XXXXXXXXX 01/18/2010 10 (Installed 3/10/2010 14?)Battery 2 XXXXXXXXX 11/26/2009 10 (Installed 03/05/2010 11J35J10)
Notice the end of the first row?I have to reset my system to do some of these tests again but this helps narrow down the problem.