When we work on old custom webdynpro component . we face this issue many time text of inputfield,textfield,textarea etc is not transported from devlopment to quality.
There are few option to solve this:-
1. It may be necessary to clear both the server cache ( SMICM -> Goto -> HTTP Plug-in -> Server Cache -> Invalidate Globally ) and also clear your browser cache of server .
2. Regenerate component by activating component again in quality if still not fixed.
3. Delete UI field and recreate this UI field and put in new TRansport request. if still you are not able to get text.
If still not able to resolve then you need to use SAP note:
Note 997513 – Changed UI element texts are not transported