I have 3 maps marked as favorites: OSM, OpenFireMap (own dgml file), and OSM2World (own dgml file). After a KDE version upgrade (4.10.5 to 4.11.0 in this case) 2 maps are marked as favorite ones: Atlas and OSM. Reproducible: Always
The reason will probably be that the (one rather one of the two used) config file has changed its name: ~/.config/kde.org/"Marble Desktop Globe.conf" is now ~/.config/KDE/"Marble Virtual Globe.conf"
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