You shuold copy this file: C:\Users\<user>\AppData\Local\GianPaoloSaliola\OkMap\<old_version>\ToolStrip1.xml to C:\Users\<user>\AppData\Local\GianPaoloSaliola\OkMap\<new_version>\ToolStrip1.xml (substitute <user>, <old_version> and <new_version>). I'll try to do this automatically in the future.