Hi,
I would first make 2 copies of your pattern design, so you don't mark on your Original design.
With one of your COPIES, I would then align them together where the pages overlap. Look where the pages of the pattern lines up!
Do the edges where the pages overlap have 1-3 columns of DUPLICATE symbols on each page? If so, then you want to make sure you don't duplicate the same columns of stitches when you are stitching. For example, on one of my patterns the RIGHT edge of the pattern of Page 1 has 3 columns of symbols that have a darker background which are the very same darker-background symbols of the 3 columns on the LEFT side of page 2 where the 2 pages of the pattern overlap. I then fold under one of the duplicate columns and carefully tape the two pages together to get rid of the duplication.
OR, You can always start stitching your pattern in the UPPER LEFT CORNER of the design(AFTER you measure from the top and side edge of your fabric and where they intersect is where you start with your first cross stitch to allow for the extra 2 or 3 inches of fabric for framing) and cross stitch the pattern without having to worry about the center arrows; then you would only have to worry about making sure you don't duplicate the overlap areas of the pattern.
I hope this doesn't confuse you. But when there are situations like yours, there is "more than one way
to skin a cat".