Labor Edits

Is there an audit trail in Vantage (4.0) that could tell me who changed
the labor detail entries. We do labor edits daily and we have 3 days
(Fri-Sat-Sun) where the numbers are significantly different than a
report that was run early yesterday morning. No one claims to have
changed anything in the labor edits (those that do it currently) and I
really would like to determine who changed the entries.

Thank you,
Kristine Pollard
Director Information Systems
American Turned Products