A proposal
“Could we move the first version to 19 August?”
The new date is offered as a question. Nothing has changed yet; the earlier date of 16 August still stands until someone agrees.
Next: Decide whether to accept, and say so in writing.
Guide
Agreement drift: when the description of a deal changes.
Agreement drift is when a later message describes an earlier agreement differently — a date, a figure or a term restated as though it had always been that way. Sometimes that is a real, agreed change. Sometimes it is a mistake. The difference is in the record.
TaskFieldAI · Published 24 September 2026
A changed date is not necessarily a broken agreement
Earlier email, 8 July: “We'll deliver the first version by 16 August.” Three different follow-ups:
Illustrative example — not customer data
An accepted change
“19 August works for us — thanks for the heads-up.”
Both sides have now agreed in writing. The later date is the agreement. Flagging it as a discrepancy would be wrong.
Next: Update the plan. The acceptance email is your record.
An unresolved discrepancy
“As agreed, the first version is due 19 August.”
The message describes 19 August as already agreed, but the available record only shows 16 August. It may have been agreed on a call, or it may be a mistake.
Next: Ask, citing the earlier message: “Our 8 July email says 16 August — where did we agree 19 August?”
Why it happens
Usually nobody is lying
Most drift is honest. Someone joins a project in month four, reads the most recent email instead of the original agreement, and repeats in good faith what they found there.
The record is scattered
Terms live in a signed document, a concession lives in a reply and an exception lives in a call nobody wrote down. No single place is wrong; none is complete.
“As we discussed” does a lot of work
The phrase presents a version of events rather than a proposal. Disputing it can feel like accusing someone, so it often goes unchallenged.
Silence can read as consent
A term restated twice without objection becomes the working assumption, and then the invoice. Clarifying early is cheaper than correcting later.
A short checklist before you reply
- Find the earliest written statement of the term, and any later message that changed it.
- Look for an explicit acceptance from both sides. A proposal on its own is not a change.
- Ask whether it could have been agreed somewhere you can't see — a call, a chat, a shared document.
- Reply with the source, not your memory: quote the date and sentence you are relying on.
- Ask a question rather than making an accusation. Most drift is honest.
What a record can't tell you: whether the difference was deliberate. That judgement stays with you.
Questions
Is agreement drift the same as a renegotiation?
No. A renegotiation is proposed, discussed and agreed. Drift describes the earlier agreement differently, often in the past tense, without that step.
Can software tell whether it was deliberate?
No. Records can show that two statements differ. They cannot show why. Missing context, honest mistakes and changes agreed elsewhere all produce the same difference on paper.
What should I keep in writing?
Confirm important terms — price, dates, scope, payment terms, responsibilities — in an email after a call. A short written confirmation is the easiest record to point back to.
How TaskFieldAI approaches this: Changes and risks
Have a thread like this?
We'll walk through how the current product would lay out the earlier record and the new statement.
An example or walkthrough comes first. Share private records only through an agreed, appropriate process.