Proper way of handling wordpress urls and redirects?

[Livet]

I have recently changed some of my urls in wordpress + adding a sub category in the url structure.

from
www.mydomain.se/category/subcategory

to

www.mydomain.se/category/subcategory/subcategory2/

My products are stil under www.mydomain.se/products/cool-product and are not affected.

Should I 301 the old url (www.mydomain.se/category/subcategory) to the new (www.mydomain.se/category/subcategory/subcategory2/)?

If that is so, can someone recommend a good 301 redirection plugin?

Thanks!

[Martijn_Scheijbeler]

Hi Bussara,

Yes, you should redirect the old urls to the new ones as the content from the old pages could now be found on the other (new) urls from how I understand it.

Hope this helps!

[Livet]

What I don't understand is that I can still see the content here: www.mydomain.se/category/subcategory and on www.mydomain.se/category/subcategory**/subcategory2/**

Would this be a duplicate content issue then?

For the product urls that I changed there is now a 404 on the old url, so for them I would definitely need to do a 301. Is it the same for categories though?