Batch Compile 100+ multiple word documents into a single word document

If you need to "extract key bits of information" from the documents you would do far better to extract it from each document as it is rather than by combining them, which is a lot of extra effort, especially where headers & footers are concerned, beforehand. I have already given you the code you'd need for bulk processing of the documents - all you need do is change the Find/Replace parts to do the data extraction rather than just updating conent.

To send content to another file, you'd need to add code to reference that file. I can't tell you how to do that yet, because I don't know what type of file you want the output to go to (eg Word document, Excel workbook), though your reference to header preservation suggests a Word document. The most obvious place to make any changes for the actual extraction would be in the 'RngFndRep' sub. As yet, I can't advise what those changes should be because: a) I don't know what you want to extract; or b) where you want to extract it to within the output file (e.g. if to a table, what the table's layout should be, whether you want a separate table for each file, and so on).

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