A couple of days ago we did a restructure of our e-commerce site (wordpress + woocomerce) where some product categories needed to change names. I used Yoast SEO plugin to do 301 redirects in the .htaccess file.
Today I noticed that we had two hits in the SERP on the phrase "dildos med vibrator". See the attached screenshot (first two results). One goes to http://www.oliverocheva.se/kategori/sexleksaker/dildos/dildos-med-vibrator/ which is the right URL. One goes to http://www.oliverocheva.se/kategori/sexleksaker/dildosdildos-med-vibrator-dildos-for-honom/ which is a corrupt URL that has never been in use. The old one we did a redirect from was /kategori/for-honom/dildos-for-honom/dildos-med-vibrator-dildos-for-honom/ The command in the .htaccess file was: Redirect 301 /kategori/for-honom/dildos-for-honom/dildos-med-vibrator-dildos-for-honom/ http://www.oliverocheva.se/kategori/sexleksaker/dildos/dildos-med-vibrator
What has happened here? Why does the 301 create entirely new URL:s in the SERP?