Probably the infamous beatshift problem. Lexicon has a scan for it that catches most of the tracks affected by it.
@DJFITME There are several ways to shift cues/grid in Lexicon. There is a recipe where you can shift as many tracks as you want in one go, just enter the millisecond amount you want there. The more hands-on way is to set up a hotkey for “Move current marker left/right”. This lets you move the entire grid very easily and precise. With Quantize enabled, your cues move with them. And if you ever find cues that are not exactly on the right, then run the Quantize Cues recipe and your cues will be put nicely on the beatgrid again.
Hope that helps!