The thumbnail for the Media is not coming where the URL doesn't start with "/medias"

[Vikrant_Singh_Gautam]

We are upgrading from 6.3 (On-Prem) to 2211 (CCV2). Our system contains images with 2 different URLs

• /medias/<rest of the URL> => These images are picked and the thumbnail is displayed
• /mam/<rest of the URL> => These images are always broken

I tried to override the WebAppMediaFilter to provide "/mam" in MEDIAS_CUSTOM_RESOURCE_PATH_PREFIXES but my custom filter is not getting picked.

In 6.3, the complete URL that gets created for the images is <host>/<media_URL> and the images are displayed, whereas in 2211 the complete URL is <host>/backoffice/<media_URL>.
Is there a way we can remove the /backoffice from the complete image URL?

SAP Commerce Cloud