Copying a webpage from one app to another

Good morning

I am trying to copy a webpage of an existing app of mine to insert it into another app (to save time having to redo it from scratch) I have done the following:
Select all, copy and paste. It works, but many of the components, though not all, (labels, textfields etc.) come with their name altered (e.g.: label 52 comes as label33 and some that were not even in the original) This, of course implies in checking and correcting. If it is a big app with many components, it is not worth the while. Is there a way I can do this? - Thanks.

Make the page external in one project and then import it into the second project.

Beatrix, thanks very much. I tried it and works just fine - Regards