This was solved using the following method
1. Go to Document properties>Opening
2. tick - 'Initial Data Reduction Based on Section Access' to allow next step
3. untick - Strict Exclusion
4. untick - 'Initial Data Reduction Based on Section Access' that you ticked in step 2.
5. Reload and save.
We had tried step 1-4 but just saved it and then reloaded using the management console task and it didn't work so be sure to reload in the document.