There is a bug in the “Add Swim Club” functionality.  I ran into this issue this morning but haven’t had a chance to diagnose it yet.  I hope to have it identified and fixed sometime today.  I apologize for the inconvenience.  To work around this problem I am choosing “None” as the opponent and then adding a note in the description field.

Update

This bug only occurs when the Google Maps URL is used.  I am trying to determine what in the Google Maps URL the validation isn’t happy with and why the data is reported as saved when it is not.