MatTableDataSource pagination state after restoring data from backup

Problem Context

When implementing a data recovery feature using Angular Material's MatTableDataSource, the pagination controls may not accurately reflect the restored dataset's size and position. This occurs because MatTableDataSource maintains internal state including page index, page size, and filtered/sorted data that may become inconsistent after a backup restoration operation.

Technical Constraints

The MatTableDataSource class automatically calculates paginator properties when data is assigned, but this calculation happens synchronously during the dataSource.data setter. When restoring data after clearing the dataSource, the paginator's pageCount and other derived properties may not update correctly if the paginator instance hasn't been properly reassociated or if change detection hasn't run.

Specific Questions

1. After restoring data to a MatTableDataSource that was previously cleared, what is the minimum set of operations required to ensure the MatPaginator displays the correct page count?

2. Does reassigning the data array to dataSource.data trigger the necessary paginator updates, or must MatPaginator.instance be explicitly reassigned?

3. In Angular Material versions 14-16, how does the timing of ChangeDetectorRef.detectChanges() affect pagination state synchronization after data restoration?