Validate: do not delete invalid values
Validate: do not delete invalid values

https://github.com/mschlenstedt/Loxberry/issues/395#issuecomment-357386395

mschlenstedt/Loxberry,mschlenstedt/Loxberry,mschlenstedt/Loxberry,mschlenstedt/Loxberry,mschlenstedt/Loxberry,mschlenstedt/Loxberry