Comment 1 for bug 168360

I've just had some similar connector issues myself. I made a horizontal
flow chart of sorts with them, and the connectors were positioned just
fine. But then for no apparent reason the 'glue point' seems to shift to
the bottom of the connected objects (whether they are groups or not).
Deleting the connectors and redrawing them just causes them to be
misaligned again. I had to delete the connectors, copy the non-connected
objects to a new doc, redo the connectors, and then copy the whole back
again.