Url property is not indexed

Hi,

I've created a Url property like this:

[BackingType(typeof(PropertyUrl))]
public virtual Url MyUrl { get; set; }

When I get search hits (projections) using EPiServer Find 10, MyUrl is empty.

I've also checked the search index in EPiServer CMS by navigating to Find / Overview; MyUrl field is not indexed.

The property is properly stored into a database. I can fetch it using ContentLoader / ContentRepository.

Has anyone run into the same problem?