Missing images after patching Kentico

We recently patched Kentico from 13.0.133 to 13.0.193 (https://devnet.kentico.com/download/hotfixes) as well as updated the Kentico nuget packages to 13.0.193. We're using MVC methodology with the app being .NET 8.0 and Azure App Service/Azure SQL for hosting.

After the patching, we ran a crawler against stage to see if there were any 404s caused by the upgrade/clean-up effort... and there were some images missing. This seems to be where users have entered images inline, rather than using a component (which forces the URL to be relative).

An example is: 'src="/getattachment/cc677e39-a856-40b4-9b57-793bed2978ef/name-of-image-1.jpg"'

The URLs DO NOT work when trying to get them from www.{{OurSite}}.com, but they do work when trying to get them from cms.{{OurSite}}.com which is our Kentico admin. (we also cleared the cache on both to make sure, and it doesn't work on www.{{OurSite}}.com when the cache is cleared, but it does continue to work on cms.{{OurSite}}.com). So, the files are not gone, but maybe the URL just has to change to a different method or something.

We'd like to figure out the cause rather than implementing a hacky method of injecting "cms.{{OurSite}}.com" into every path when the image locations are rendered. (e.g cms.{{OurSite}}.com/getattachment/cc677e39-a856-40b4-9b57-793bed2978ef/name-of-image1.jpg)

Any help would be appreciated.