Changing the coordinates of a public AL stage

[+Calypso62]

A friend of mine has a public AL that a few people have already completed. It appears that one of the stages (a train station) may have developed a phone reception/GPS issue that prevents the question being activated within the currently set 100m geofence.  This AL is completed while travelling by train. The approaching distance counts down until you are about 400m out and then freezes. The first solution would be to widen the geofence but I'm wondering if it's advisable to change the actual coordinates of the stage in order to activate the question prior to arriving at the station. Would this cause any issues to anyone who previously completed the AL? Can this cause the AL to crash? Are there any other problems that might occur because of the coordinate change?

 

Any help is greatly appreciated.

[+ecanderson]

Changing location won't have any impact on previous finders.  That information can be edited at any time.

Because no previous searcher would expect this solution, it would have to be carefully explained in the description for the stage, or people will have difficulty understanding that they must see information in one location and report it in another.