Even if gold blush is a separate morph in the sense that it is caused by a separate gene, it may be difficult to the point of nearly impossible to separate it from mojave. I don't know if it hasn't been done yet simply due to lack of trying, because it was assumed to be more of a selective breeding thing than a distinct gene. Or, if it hasn't been done yet because the two genes are difficult to separate. If they are on the same chromosome and at adjacent or nearly adjacent loci, most of the time a snake will either inherit both or neither, because they won't get separated very often.

I also don't know how the gold blush mojave originated. Is there any possibility that gold blush mojave isn't the mojave gene at all, but a different (just very similar) gene in the BEL complex?