Anyone else having an issue with CMYK 100%-K value getting reconfigured on PDF/X-3: 2003 (ISO 15930-6) CMYK Export to values like:

C - 74.06%
M - 68.29%
Y - 66.57%
K - 89.83%

When working in the xar file, the CMYK for black is:

C - 0%
M - 0%
Y - 0%
K - 100%

Any enlightenment about this would be greatly appreciated!!