Use this tab to select the estimates that you want to merge. You can select an estimate more than one time if you want to create multiple copies of items in the final estimate. Example
For more information, click 
on the title bar of the window, and then click a field or button.
Tip: The order in which you select the estimates determines what happens to addons that have the same number. The target estimate includes only the addon from the first estimate selected. Similarly, when combining items with different attachments (Step 2 of this wizard), Sage Estimating (SQL) includes only the attachment from the first estimate selected.