I got current columns for Zh GoogleMap, and create 2 files to upload maps and markers.
The Zh OpenStreetMap extension was created based on Zh GoogleMap extension. Therefore most of columns are the same.
But it can contain different values (for example for control positions)
After you upload your data, you need to fix problems - categories have different IDs for different extension.
You just need to write UPDATE clause and change "old" category ID from OSM, to "new" category for Google.
The field is catid
I hope your Zh GoogleMaps tables is empty (ie you haven't any data in extension)
In my scripts I created google tables with prefix demo2, and OSM tables have prefix demo,
But in your real tables there is the same prefix