Sent btc from my lightning node on-chain to my AquaBitcoin wallet

Transaction surpringsingly shows 2 outputs:

~10M sats and 200k sats

only the bigger utxo is shown as balance in aqua

Later I sent another ~10M sats from my node to aqua.

Now the 200k utxo from last time becomes one of the inputs in this 2nd tx.

And again there are 2 outputs in the 2nd transaction and the smaller one doesnt show up in by aqua acc balance

so i have 2 big questions now. can some one help me understand

1)why aqua is hiding a small part of my balance and how i will be able to get it back?

2)how can the 200k utxo be one of the inputs of the transaction when my node wasnt even in possesion of this utxo?