regexp matches are sensitive to position in check items

Basically, this works in "hints": DEFAULT NAS-Port-Id =~ "(.+):(.+)", NAS-Port !* ANY NAS-Port = `%{expr:1000*%{1} + %{2}}`, Fall-Through = Yes ...but this does not: DEFAULT NAS-Port !* ANY, NAS-Port-Id =~ "(.+):(.+)" NAS-Port = `%{expr:1000*%{1} + %{2}}`, Fall-Through = Yes ...as %{1} and %{2} are undefined in the latter case. I would have expected this to be the opposite case if anything. Is this expected? In 2.0 I would use an "if" unlang, but this is on our (soon to be upgraded) production servers.