Live books and prop desks are not the same journal

A brokerage statement asks one question: did the money go up. A prop statement asks a different one: did you stay inside a published cage while the money went up. Journals that flatten both into one equity curve are built for the first question. Most of the traders we see are living in the second.

Two death conditions

On a live book, a 12% pullback is a bad month. On a 50k combine with a $2,000 trailing drawdown, the same sequence is an obituary. The fills can be identical. The account is not.

• Static max loss vs trailing drawdown that ratchets on closed profit.
• Daily loss that resets at the firm’s session, not yours.
• Consistency caps that punish the one green day you were proud of.
• News windows and max contracts that do not exist on your IBKR book.

Why the spreadsheet lies

Excel will sum MES and EURUSD and call it “the week.” It will not tell you that Tuesday’s winner pushed the trail up and Wednesday’s scratch still counted as a lock risk. It will not tell you the eval is 4% from a consistency breach while the live book is at ATH.

How to split the books without extra busywork

• One account per firm phase (Challenge, Verification, Funded) — not one account named “NQ.”
• Import or enter into the account you actually traded. Do not “move” winners later.
• Read the rule bar before you size. If the trail is tight, the journal should say so before the click.
• When you get paid, log the payout on that book. Cashflow is part of the prop story.

If you only have a live book, fine — the journal should still be honest about drawdown and R. If you have both, do not let the live curve subsidize a combine you are quietly failing.