Connexion disappear promote universe on pre-prod to production

Hi,

I have a problème with business object 4. When I promote a universe in preprod to production , the connexion in production disappear and I cannot consult the report in production because I have the following error message (sorry it's in French) but if I try to translate the message into English;

unable to reach resource: "You are not authorized to access data on this confection or the connection is not defined. Please contact your administrator."

I managed to solve the problem by going through IDT, I take the universe that was promoted to production, I put the connection that jumped during the promotion from pre-production to production to it, then I republish the universe on the production server. Normally when promoting a universe the connection should not jump.

Has anyone ever had the problem ?