how mt5 handles partially filling orders


I am using  mt5 in  Hedge mode.

assume I have submitted a pending buy_limit order (i.e. 5 lots of BTC).

imagine the broker could fill only part of the volume (2 lots of BTC).

Now, what I will see in the  "Trade Tabe" of mt5? an open position, and below it another pending order? or I will see only the open position?

after a couple of minutes, the broker fills the remaining volume. Now, what I will see in "Trade Tabe"?

also, it would be great if someone can explain what happens inside the "History" Tab alongside the "Trade" tab.

thanks in advance

any comment is appreciated