I am afraid saving the data is outside of the RadMap scope. The control targets map and shapes visualization, but not saving shapes back. To avoid any misunderstanding I should say that RadMap doesn't save any data but just shows map shapes represented in one of the following formats: ESRI shape file, KML, WKT/WKB. So, it is on your own to create routines which will store map geometries to ESRI shape file.
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