Change the catergory in the url and the page still resolves

[Valdez360]

If I go to the product on my site below:

http://oxfordgenetics.com/plasmid-products/protein-secretion/bacterial-secreted/bacterial-secretion-tag/og3042-psf-oxb20-nh2-ompa-6his-tev-detail

and after the page loads I change say, "protein-secretion" to say "virtuemart-is-brilliant" in the browser address bar leaving the rest of the URL as it was, then virtuemart takes this new, but absurd URL and loads the product as if the url was correct still:

http://oxfordgenetics.com/plasmid-products/Virtuemart-is-brilliant/bacterial-secreted/bacterial-secretion-tag/og3042-psf-oxb20-nh2-ompa-6his-tev-detail

Why does this happen?
Can I change it so I get a 404? Do I want to change it so I get a 404?

The site is oxfordgenetics.com
Joomla! 2.5.17
VM 2.0.26d

[jjk]

See here: http://forum.virtuemart.net/index.php?topic=119171.msg405167#msg405167

[Valdez360]

Thanks JJK. We are split as to whether this is a feature or a bug. I personally like the behaviour and I never had any problems with 301s (and there have been many). Thanks for the help.