I'll post a thread soon on how to upload pics to the forums here ;-)
I think I understand the question.
Martin has one region looped. Somewhere, say Bar 32 there is another region on the same track. The first region won't loop beyond that 2nd region so stops to that point.
Once you remove the 2nd region, the original region will loop to the next "block" (region) or the end point of the project.
There are two ways of looping in the Arrange:
1. select the region, press "L" or tick the Loop checkbox in the Region parameters box in the Inspector.
Logic loops the region until it "meets" another region on the track. Once that other region is removed, the original region's loops will continue to the next region.
2. Position the mouse over the top right of a region. The cursor turns into the loop tool. Dragging to the right will loop the region to a user specified point in the Arrange area. If you loop up to another existing region then if the other region is moved or deleted, the original loop will not continue (because the user has specified where the loop should end).
Hope that makes sense :-)