Yes true. It's the method used to link the two sets of content controls. I got it from the information you provided in the attached link.
This is where it creates ole_links and in doing so a warning message is displayed each time the document is opened.Quote:
Simple Linked Content Controls
While not actually mapped, the following quick and simple method was suggested by Aaron Marin via user feedback on this page:
- Insert a plain text content control.
- Select the control (by clicking the small control tab)then Developer>ontrols>Properties and define a title for the control.
- Right click and select "Copy."
- Position the cursor where you need the text repeated.
- Using the Home tab click Paste>Paste Special and select the "Paste link" option button. Then in the "As" dropdown select "Unformatted Text" and click "OK."
- Now anytime the text is changed in the initial control and you exit the control all of the linked copies will update
What could work is giving the two controls on the title page unique style names and then use the 'StyleRef' field on the introduction page. As the controls are all on one line on the title page, i.e. Visit Dates: 'Visit Date - From' - 'Visit Date - To', I could use style separators.