Can't rename auto-detected kits

To fix QMake endless loop when building project with long names (see https://stackoverflow.com/a/36221641/3336423), one alternative is to make the kit name shorter (as the kit name is used to construct shadow build folder, this makes path shorter and fixes endless loop issue).

I used to do this with QtCreator 4.0.3 and it used to work well.

With QtCreator 4.8.0 I can't rename auto detected kits. I open the Options dialog, rename a kit from "Android for armeabi-v7a (Clang Qt 5.12.0 for Android ARMv7)" to "android_armeabi-v7a". Clic Apply, close the Options dialog, reopen it, looks good. Now if I close and re-open QtCreator, the change is gone and name is back to "Android for armeabi-v7a (Clang Qt 5.12.0 for Android ARMv7)".

Any workaround (a ini or xml to be modified) would be appreciated....