Analyzing only when worried
Waiting until problems appear to review updates, when earlier periods are harder to evaluate.
General contractors, subcontractors and construction managers

For Developers, Owners & Public Entities
Update review compares reported progress and revisions with the project record, period by period, and explains any discrepancies found.
Update review may consider changes in progress, forecasts, logic and durations alongside other project evidence. Comparison periods, reporting frequency and the significance of revisions depend on the assignment and available information.

Possible assignment considerations
Assess each update against the one before it rather than in isolation, the differences carry the information.
Check reported actual starts and finishes against daily reports and observed progress rather than accepting them as stated.
Identify revisions between periods and ask for the reason while the answer still exists.
What reporting format and frequency relate to the assignment, available information and relevant contract provisions?
Considerations and limitations
Waiting until problems appear to review updates, when earlier periods are harder to evaluate.
Taking recorded dates at face value without checking them against the field record.
Receiving updates period after period without comment, and finding that silence characterized as acceptance.
Schedule Update Analysis
Also in this practice