When in the minimig core (but possibly other cores too) and trying to select the location of .vhd files, there is no option to move directories (it doesn't show directories marked with the system attribute either). If changing the configuration files (minimig.cfg, minimig1.cfg, etc.) manually, a directory can be added to the location of the .vhd files and everything works normally (the minimig core correctly loads de corresponding .vhd files), so the issue seems to be purely cosmetic and with the OSD menu functionality.
When in the minimig core (but possibly other cores too) and trying to select the location of .vhd files, there is no option to move directories (it doesn't show directories marked with the system attribute either). If changing the configuration files (minimig.cfg, minimig1.cfg, etc.) manually, a directory can be added to the location of the .vhd files and everything works normally (the minimig core correctly loads de corresponding .vhd files), so the issue seems to be purely cosmetic and with the OSD menu functionality.