Certificate images fetch issue after domain change

[ironicmoka]

Hi there,

I don't know if I should open an Issue on that or I'm just lacking experience on how to fix it correctly but here's my problem:

I'm moving an existent Chamilo instance from server to server and from an old domain to a new one.
After working on the configuration files, rebuilding the site cache and processing the database with a thorough search and replace everything seems to work fine except for the images inside certificate generated.

Certificates are generated correctly, both the pdf and html versions, but I noticed they still load embedded images from the old domain (a logo and a progress image).

I checked the htaccess file, run searches both on files and database but I can't find any reference to the old domain left around. It is possible that images urls are stored as base64 or other format preventing me to find it? If that so it will be very helpful some guidance on where to check next.

Thanks in advance to anyone able to throw me some hints on how to debug this further, or even better solve it! I tried everything I can came up with and now I'm stuck. I'll be able to get the old domain running for a brief time just to service those images, but I'd like to get rid of it eventually.
Let me know if you need more details