If you go back to the original input field (where you enter the company name the first time) and double click on it, at the bottom there is an option that says "calculate on exit"

If you check this box, then whenever you update the original input field and tab out of it, all of the other cross references will update automatically.

Note that the cross references will NOT update automatically unless the document is protected!

If you need to edit whole sentences within paragraphs in the document, you probably won't be able to do this. But if it is just a template and you only need to edit certain things (ie insert either "Mr." or "Ms.") you can use a form field for those places also, then protect the document.

Alternately, if you can isolate all of the areas that need to be edited into paragraphs, you can use contiuous breaks to separate the document into sections. If sections 1 and 3 contain text where only a few form fields need to be edited, you can protect it while leaving section 2 editable.

Post back if you need instructions on how to do that.