It looks like I may have successfully written an alpha “migrator plug-in” that may work for migrating your com_google_maps component from Joomla 1.0.x to 1.5.

Once I have tested this on the internal testbed migration sites for one of my customers, I will write it up here.
This will be useful since the developer of the Google Maps API for joomla has no current migration plugins.

Stay tuned….