This helps to clean up your properties by merging duplicated properties.
Unique properties, properties which do not have any similar description, will be hidden by default. You can uncheck the (1) checkbox to show all.
Each non-unique property listed has number of similar properties (2), calculated based on description.
Use button (3) to add properties that you want to merge to Merge list.
When you add a selected property to list, all similar properties will be picked up by default.
Clicking on Merge button (4) will merge all properties in Merge list to the 1st one. The system property (if any) is always in top. Only one system property is allowed in Merge Properties at once.
All instance of merged properties in equipment will be replaced by the master.