Liquid Swap doubts

Hi everyone, i've a question about liquid swap (LS).. i didn't quite understand something.I understand that with LS you are able to put in a pool of a pair, that pair or only one of the two part to get rewards.
(example: SHIB/USDT, you can put a part in SHIB and a part in USDT to reduce the fees, but you can also put only SHIB or only USDT).

I put almost 6.000.000 SHIB in the LS pool, now i wish to remove them from the pool to hold them normally, or move them to the stacking. but the fact i noticed is that when i go to remove my SHIB binance gave me back less then 5.000.000 where the 1mln went?.. the thing is related with the fact that the value rised... but why i get less quantity back?

Don't be rude... i'm only trying to understand it all

Thanks in advance