Not sure from your description if this is what you have done anyway but try just putting down the 5V copper area everywhere it is needed then draw tracks where you want copper-free gaps which you then select and do right-click: **Convert to Board Cutout** then set them to: **No Solid** Then do SHIFT+B to rebuild all Copper Areas. That then draws a copper-free line along the track path. Seems to work OK if you leave the gapping track un-named but it may be safest to give them all the same, unique name to clearly locate and identify them.

@andyfierman Hey that does help actually, way quicker than drawing the outline of the no solid area manually. Thanks for the tip.

You can try to change the copper area sort at copper manager at Tools