The Update From D-Tools Library feature allows you to compare Products and Labor Items in a Project with what is in your SI 2015 Catalog.
This allows you to see differences in fields between a Product in SI 2015 and what is in the D-Tools download library.
When you want to see if any fields have changed in the D-Tools download library since you downloaded and modified a Product.
Once you select the Product(s) that you want to compare, click the [Update from] button in the D-Tools Library section of the ribbon:
This will open the Compare with Catalog form:
This will display all of the differences between your local data and what is available for download. If you selected multiple Products to compare/update they will be listed on the left side of the interface:
The Options button allows you to choose which fields will be updated to your local Product(s) from the D-Tools download library:
When ready, click either the [Update and Close] or [Update] button on the ribbon.