I'm assuming you have added a revision table to a second sheet. Go to your Document Properties and find the "Revision" section under "Tables". There is an option at the bottom for "Multiple sheet style". You want them set to "Independent"
This is strange. I'm running S2010, so perhaps that makes a difference, but I have the "Multiple sheet style" set to "See Sheet 1" and I still have indpendent control over the revision tables on sheets 1 and 2. What gives?