Is there any way to replace one page of a scanned and saved file with an updated or corrected page?

When I do my husband’s expense reports I have to scan every individual page of each week’s report. The number of pages can range from 1 to about 12! Well, I have a current report that has 6 pages for last week. Everything is in order, except I’ve had to make minor corrections TWICE now to the main total / calc page (page one), which means I’ve scanned all 6 pages 3 TIMES——1st time was the original, last two for minor corrections….and my scanner takes forever and ever. Well, now I gots to do it again because I transposed some numbers on the main calc page….can I just rescan the main calc page and replace the bad one?