I just realised how stupid my reply before was.
Yeah, i was actually talking about LS and DS points, not Influence .
I think it just generally stays the same when you have both gained and lost influence, as they would just cancel each other out. One thing to remember though, is that happens a lot with Kreia, or i found it happened a lot with her, you say something to please her, then you try and say more good things and you lose influence .