Quote revisioning is a frequent requirement in a sales process. Users are looking for a simple way to revision their quotes, based on fine adjustments to project scopes. With revisioning, an organization's quote process has transparency and changes are documented as revisions. Revised quotes also keep activities seen on the timeline.
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This targetting April 2022 release wave. Should land in the product before Sept 30 2022. Please keep track in the Release Plans for Project Operations here: Revision and activation of quotes - Dynamics 365 Release Plan | Microsoft Docs