Working STAPL files generated with the same bitstream using Linux 32-bit and Windows Operating systems are not identical.
In other cases, consecutive STAPL files generated using the same Operating System and the exact same sequence within iMPACT can also vary.
This is known issue for STAPL file generation. The differences seen in the files are the "don't care" parts of the data shift. The iMPACT tool treats these areas as don't care, allowing the random differences to appear in the output.
As a result, these differences do not matter.