There are few configuration which are language dependent and the values will be displayed in case if you view through the original language.
One such case is Maint Plan Category in the Plant maintainence.
I have configured a new Maint plan category in the Configuration client ( in Language DE) and after transporting the same to my quality client i was not able to see them in the transaction.( in Language EN)
When i checked i was able to see the same in the configuration node.
The during analysis i found that the translation was not maintained correctly in other languages.
After maintaining this translation and transporting we were able to see the configuration fully.
It was an interesting find.
Leave a comment if this post was helpful !!