Profile resolution spec and order of appearance of controls

[galtm]

In the profile resolution spec, the section about custom merges says,

<p>An
   <src>insert-controls</src> with an
   <src>include-all</src> child results in all included controls being selected and inserted. They are given in the same order as they appeared in the input control selection(s).
</p>

I wasn't sure whether "the input control selection(s)" referred to the order of with-id or similar specifiers in the profile document, the sequence of controls in the imported catalog, or something else. Similarly, I wasn't sure if the order="keep" attribute (using XML syntax here) referred to the order of with-id elements in the profile.

I heard from @david-waltermire-nist that the selection ordering doesn't matter. Can the spec's section about custom merges be clarified on this point? Thank you!