LTA claim has to be lodged once in a block of two years for the purpose of IT relief
If your service rules / HR Policy provides for a minimum of three days to be availed to undertake a tour outside , you need to do so accordingly .
From what you said , you had gone on leave on loss of pay for some days in the last one year and eventually you could have lost salary for that period. Where is the question of deducting money from your LTA entitlemnet.
If your question is otherwise than what i understood, do you mean to say that the Loss of pay days in the last one year alone should be taken for the purpose of offsetting the duration of LTA tour, then it is to your advantage to collect the LTA amount without necessarily taking leave afresh.
P.Senthilkumar