As you discovered, by inserting an index in the first line of a document, or in the first line of a section, or just after a page break we can not move it or insert text before it. It is convenient to leave at least one blank line before any index.
You can delete an index with a right click on it → delete index. To add a blank line before the index without deleting it, you need to perform the following procedure:
- Right click on the index → Edit Index → disable Protected against manual changes → OK
- With the cursor at the beginning of the index, press
Alt
Enter
twice: a blank line will be created before the index
- It is now possible to re-enable the option removed in point 1: there will be an empty paragraph before the index.
Now you can insert the page break before the index.