In OpenDmis, if you've already configured a sensor with many different angles and later on you need to make a small change (e.g. add 10 mm stylus extension) but still want to keep all the angles, you don't have to add them manually (since it's a new configuration, you'll only have the root sensor in the tree), all you have to do is highlight all existing sensor angles (they don't even have to be under same root sensor) and Drag-n-Drop onto to the new root sensor:

 

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Results as follow:

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