Sorry about your issue.
I may have found what is the problem, could you try the following and let me know:
Disable the Synchronize map options
Open every entry and set back the Location configuration to map default
Enable the Synchronize map option
Configure the location for the first entry to the desired location
Save and try it out
I am thinking the app is not ignoring the values that you set for every entries before you turned on the synchronize option.