Preoccupied, forgetful (6,6)
I believe the answer is:
absent minded
I believe this clue is a double definition.
'preoccupied' is the first definition.
(thesaurus)
'forgetful' is the second definition.
(I've seen this before)
(Other definitions for absent minded that I've seen before include "having an inclination to take a holiday?" , "attentive? Not so" , "forgetful" , "Daydreaming" , "Forgetting" .)