Provisional cat d disapeared

About four or five years ago i applied for both cat c and d provisonal licence. Yesterday i passed my c+e when i looked this morning to see if my C+E had been added my provisional c+e and cat d was still there. This afternoon its been updated however my provisional cat D has disapeared.

Has anyone got a clue why not that it matters i guess as if i ever decide i want to drive buses/coaches i can reapply i guess