For this request, you need to make sure you not only have searchable text, but pages as well. If a PDF has text but no pages, you are out of luck trying to copy or remove that page from a document.

1. Create a search that finds all documents with pages, and contains the phrase in the text that you need.

2. In workflow, create a search activity and input that search into it. 

3. Use a "For Each Entry" activity and set it to go through all the found items.

4. Use a "Retrieve Document Text" activity with the Token option set for making the text a multi-value token

5. Use a "For Each Value" activity to iterate through each value of the text

6. Use a Conditional Sequence to see if the current value contains the phrase you need. 

7. Inside the conditional sequence, have it use the token for the iteration of the value for the page number you are to copy to a new entry. If you move the page out, then you are making the next invoice inside the same document inaccurate as you have removed a page now. 

8. Publish and initiate workflow. Sit back and relax with some lemonade.