Without seeing your example, it's hard to know what's going on. My first guess is that the magent line is not on the same drawing view as the balloons that you are attempting to tie to it. All balloons attached to any single magnet line must be on the same drawing view. If this is not the case in your example, can you provide more information, such as a example files that demonstrate what you are experiencing? Also, if there is indeed something no working correctly, I'd ask that you contact your VAR to have them evaluate the issue and, if necessary, file a bug report.