Y is linear while A is angular, I don’t believe it’s possible to swap them.
Sheetcam’s G94 G1XA feedrate is not per NIST RS274 spec, rather it conforms to certain pre-spec era controllers. As such, the feedrate is wrong for many newer controllers. To fix this, we recently developed a pp to output G93 Inverse Time feedrate mode. You can apply that fix to your pp. See G93 pp here- Post Processor Example w Custom Options popup window