Deleting takeoff data in the Takeoff workspace affects how quantities appear and behave in Pipeline LBM (PLBM). This article explains what happens when measurements are deleted, how those changes sync to PLBM, and what users should expect downstream.

Note: Deleted data cannot be restored. This action cannot be undone.

What counts as deleted takeoff data

Takeoff data is considered deleted when:

• Individual measurements are removed from a sheet.
• All measurements for a sheet are deleted.
• Entire sheets are deleted from the job.
• All takeoff data is removed from the job.

What happens in the Takeoff workspace

When you delete takeoff data in the Takeoff workspace:

• The measurement is immediately removed from the sheet.
• Local takeoff quantities are updated in real time.
• Deleted measurements no longer contribute to totals.

What happens in PLBM after syncing

Changes made in the Takeoff workspace are reflected in PLBM only after quantities are synced again. Once synced, PLBM updates quantities based on the current state of the takeoff.

Depending on what was deleted:

• Deleted measurements reduce or remove corresponding quantities in PLBM.
• If all takeoff data is deleted and synced, synced quantities may be removed from PLBM.
• Quantity pages reflect the updated totals after sync.

How deletion affects the Bill of Materials

Deleting takeoff data does not automatically change an existing Bill of Materials (BOM). To reflect deleted measurements in a BOM, you must regenerate the BOM in PLBM after syncing.

Regenerating the BOM applies updated quantities from the latest sync. Manual edits made to a BOM may be overwritten during regeneration.

Best practices

To avoid unintended data loss:

• Review measurements carefully before deleting.
• Sync quantities after deletions to keep PLBM aligned.
• Regenerate BOMs only when you are ready to apply updated quantities.