I think it's not so much the $r object and its params, but rather some other data structure that's retaining the values.  At least, in your original post, it isn't clear where %ship_address comes from, how data gets into it, if it's global (which could be the problem), or if you do empty it on every request, etc.  In other words, it's hard to provide anything else than general hints without seeing the actual (complete) code...

In reply to Re^3: keeping variables separate by almut
in thread keeping variables separate by RandomWalk

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