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As stated above, I'm using 2024 Deluxe on Mac (desktop version). I have just updated my software and Missouri forms this morning. The application shows as version 2024.r23.034 with a Build Date of Mar 20, 2025 at 6:35:04 AM. The Missouri forms show "REV 3/14/25 TTMAC." The 2-D barcode (example below) should be on the upper right hand corner of the first page of the MO-1040, but is not. Also the "Mail to:" addresses appearing near the bottom of MO-1040 page 5 should be P.O. Box 3370 (for Balance Due) and P.O. Box 3222 (for Refund or No Amount Due) when the 2-D barcode is used (on the appropriate MO-1040 for the 2-D barcode), but instead are printed as P.O. Box 329 and P.O. Box 500, respectively, which are only appropriate when there is no 2-D barcode.
I believe you are likely seeing the 1-D barcodes (copied below) on each page of the Missouri forms (including the bottom of MO-1040 pages 1 and 4). These do not present the tax return data in a scannable form as the 2-D barcode does. I think they only identify the tax form/tax preparation vendor.
Example of 2-D Barcode (this is horizontally shorter than what normally prints on the MO-1040):
1-D barcode that appears on all pages of MO-1040:
