[rt-users] LastUpdated should be ignored by ModifyDates

[joey]

Hey there,

I tried around alot, but i can't get it to work. I need the
LastUpdated-field not to be changed when someone changes the Due-Date of
a ticket.

This is what i acutally want to set-up:
A tool (rt-crontool for ex.) that searches tickets that has not been
modified since a given period of time. Modified means neither a comment
nor a correspondence. Modifying the Due-Date, Priority or whatever
should be ignored.

Any hints?

Greets,
joey