Hello,
Well, the general Windows INI format is:
[section]
keyname=value
In other words, your _AUSWAHLRN_ "[_AUSWAHLRN_]" is not an INI item at all ;-) So it is the expected Windows behavior that this does not work! keyname=valuename translates into your _AUSWAHLRN_="[_AUSWAHLRN_]" which does work fine.
Friedrich