Shari Tremmor

When I posted an event the LM for the landing point was right but after clicking save it changed all the numbers to zero's. This lands us on a parcel of the same sim that is up for sale now.This has happened with the last 2 event posted for our club. The parcel owner posted last week and it happened and again to me when I posted this week. How can I fix it before the event and prevent it from happening again? Thx in advance for any help :)) The LM is already placed by in the list with coordinates already set but it changes when the post is saved