History is an input, not a record
Your expenditure estimate is computed from your history — recent intake, recent weigh-ins, day states. So when you correct the past, the present recalculates: fix a mistyped weigh-in, log a forgotten meal onto an earlier day, mark an old day as fasting or incomplete, and the recent stretch of your expenditure curve is rebuilt from the corrected data.
This is deliberate. The alternative — freezing conclusions drawn from data you've since fixed — would mean your targets rest on numbers you know are wrong.
What this means in practice
- Correcting the past is always worth it. A more truthful history produces a more truthful estimate.
- Your expenditure chart can change shape retroactively over the recent weeks after an edit. If today's number moved a little after you fixed last Tuesday, that's the recalculation, not a glitch.
- Backfilling counts. Food logged onto a previous day flows into the same math as food logged live. (Your logging streak, however, only counts days logged on the day — backfilling fixes your data, not your streak.)
What editing the past does not change
Your current targets don't silently move when you edit history. Targets change at the weekly check-in — where you see the suggestion, the reasoning, and choose to apply it or keep what you have. Past days in your journal also keep the targets they had at the time; a check-in only applies new targets from today forward.