I am also trying to use wpallimport to import from a xml url that contains no latitude or longitude fields.
I am using wp residence theme.
I can sucessully import but also not able to add town location to property map
So this is where i am at for many days of work but still with no success.
I have placed gchoyal script into the end of my functions.php file.
I have added the custom fields property_longitude & property_latitude into the xml import custom fields and added the town name to both these fields.
The properties still import OK but the property town is not added to the map.
Any help would be greatly appreciated please.