Copy and Paste

How do you copy a drawing from one document to another? If a student started drawing plans but did not use my custom template. We want to Select all (Control A) copy all ( Control C) and then go to a new tab and paste (control V). This option is not working with keyboard shortcuts or by using the right-click menu in the sketchup app.

The only way to make that work is to copy the model and in the same tab either start a new file or open the desired file and paste or paste in place. You can’t copy between tabs.