If you use chord playback, the chords are always on the exact rhythmic position. They ought to follow whatever swing is in effect. In the example below, with tempo set to heavy swing, the eb7#9 plays way before the written notes hit.
It may be a somewhat repetitive process, but one can move an existing Chord Symbol to the left or right by a grid step using the customary ALT/OPT + L/R Arrow key