I have a drawing which consists of parts arranged in groups. I would like to copy a portion of the completed drawing to recreate and scale it up. Because the elements I need are part of a group, normal select won't work. I can use Deep Select to select items, but Copy/Paste doesn't function. I tried using the Ctrl Drag Copy function, but it spit out errors. (attached)

Is the only way to copy elements from a group is to ungroup everything? I can't see doing this as trying to rebuild the groups would be very difficult. I thought the Lasso select in the right click context menu might be something to try, but it too does nothing. In fact, the current documentation doesn't mention anything related to "Lasso".

Any help is appreciated.