By closely examining different study tables in the database, where visits are defined, I found out that somehow labkey is fetching values from the "Row Id" from the visits tables. This I think is the bug. Perhaps it could be addressed by changing the "Row Id" in each table (wherever there are visits defined) to the actual numeric values of the visits? However, for this I will need to find out all the tables where visits are associated (row id) with other tables so that the tables' relationships in my database do not break. I have already found that "visit" and "participantvisit" are two tables that are associated and the row ids need to be change in both of them. What do you suggest in this case?