CRM Icons not correctly associated after publishing customizations.

Something strange happened with me today.We created a export through the sdk for the customizations and import it into the server.After publishing I noticed all the icons were miss aligned with different entities.

I edited one entity and changed the icon associated to it to something different.Once pressing ok the crm system reloads the customizations entity page.This corrected the problem.I republished and by luck all the associations was correctly updated.