Pat,
Are you setting your relationships programatically? If so, make sure that you use the ADDITIVE clause if multipe relationships need to be set, other wise the SET RELATION will drop any current relationship.

HTH

>Hi All,
>
>I have a strange problem at hand here. It seems that some of the relations involved in a DBC get lost when I modify some tables.
>
>This is a 50 tables DBC, in which there are many relations between the tables. For example I have a PROJECTS table and a CUSTOMERS table. Both table are linked with a CUST_ID field (a project is linked to a customer).
>
>If I update say another table in the system (the MODULES table for example), I suddenly lose the relation that once linked the PROJECTS and CUSTOMERS table together.
>
>Is this a known problem and is there any way to prevent this from happening?
>
>Thank you.
>
>Pat