Why would any platform to track previous trades? You will get a broker 1099 in February, it shows all trades there, profit or loss.
They can track it however they want but don't have the trade just disappear into the ether once you close it.
i don’t understand what you are asking. once you closed a position, it goes to realized pnl, you can pull the statement. net liq is current and unrealized pnl.
The way they have it set up is cryptic. As soon as you close a trade it just disappears into the ether of trade history. It keeps the closing price, but not the trade (book) price. If you legged in then you would have to re-calculate the BE etc...and good luck finding the opening of the trade if it was months ago, and it doesn't group the orders either. It's basically back end accounting being used as front end user interface. Here are 2 examples of how tos shows an open credit spread. If you glance at theirs it actually tells you nothing at all. Here you can see that they don't tally the actual spread cost for convenience, or tally up the individual P/L for you if you have multiple trades on the same symbol, it just tally's all of them a whole. And they don't give you the closing costs so you can see the affect on capital closing a trade will have. Here is my spreadsheet. If you glance at mine you know exactly where your trade and capital are at...which in these examples are a heaping pile of garbage.