Saving presets fails

[radzmar]

I've got my MRCC recently and used hours of configuring labels and the correct routing between USB and 5 DIN ports over the R7 modul. But I'm facing the problem that saving over an existing presets sometimes don't work. It say "User 1 saved" but in the same turn the preset name itself turns from green to red. It also doesn't help to save to another preset slot. All become red and when turning off and on all my work are gone. What a PITA!!! I already replaced the microSD but that doesn't help. FW is 1.1.052, so it's up to date. Any ideas?