The import pane is used to import cards or changes sets from other Q&As.
First, browse to the existing Q&A document you want to import cards/change sets from. The cards/change sets will be shown below the browse module.
Next, you can choose whether to import the cards or the change sets by using these selectors on top:
Next, you can either copy or directly import an entire card or change set by clicking either to import or to copy. If you have copied, you can paste by clicking the paste button in the cards or changes pane.
Individual questions can also be copied by clicking next to the relevant question and then be pasted in one of your existing cards.