The Canyon Corporate Center bid went through multiple client-driven revisions. Partway through, the client corrected a unit count that had been off by more than two dozen units, right after he'd already asked for a value-engineering pass on one finish level.
I held the estimate to the methodology that actually drove it, square footage, instead of quietly reworking it to match his corrected unit count. And I openly flagged my own labeling error on which finish level the VE request actually applied to.
A bid built and defended on square footage survives a bad unit count. One that gets silently patched to match whatever number the client last gave you loses the ability to explain itself later if that number turns out wrong again too. Naming my own mistake instead of quietly fixing it kept the client's trust in the rest of the number intact.
We issued a v2 Rev 2 and then a v3 Rev 3, each labeled clearly against the prior version, so the client always knew which number was current.
Correct your own mistake out loud, and don't let someone else's bad number quietly become your basis.
Version discipline here is really a form of respect. The client's juggling a lot of numbers of his own, and he needs to trust which one is real.