RDA Isses with 8.98.4.* tools releases.
1. Business View Columns added into RDA missing the description and displayed as Date fields though they are not date fields.
This is issue has been reported under the following Bugs:
Bug 11662256 - RDA INSERTS WRONG BSVW
Bug 11667705 - E1: RDA BSVW COLUMN ISSUE AFTER UPGRADE TO TR 8.98.4
Currently development is working on this issue and once the Bugs moved to closed status, you can request for a POC fix.
Possible Workaround:
For now if you absolutely need to add the BSVW columns, use an older version of the system folder, for example, Rename existing system folder in 8.98.4.* release and copy system folder from 898.3.* release and paste it in 8.98.4.* fat client. Then add the BSVW column, and then switch back to 898.4.x to continue with other development tasks.