Made a mistake dirty flashing Android 11 over 10.
I made a full TWRP backup on internal memory before flashing xiaomi.eu_multi_HMK20ProMI9TPro_21.2.24_v12-11.zip over xiaomi.eu_multi_HMK20ProMI9TPro_V12.0.1.0.QFKCNXM_v12-10.zip.
Now I cannot restore my backup because I am not asked for...