Changing User field names in QC

Hi,

We have number of projects - we want all projects to have the same field definition (for enabling copying from one to the other and having the same VB scripts etc.).

So we want to have a common field definitions but we want the old projects to change to this definition.

E.g..

we want all project to have a Test-Instance user filed with Field Name TC_USER_1 (label=OS, and uses lookup list)

our project have a field for OS and we want to keep this information but it is TC_USER_05

so we want to change TC_USER_05 to TC_USER_01

how could this be done?

We tried the following:

1. Open DB in MS SQL Server Management Studio

2. EXEC sp_RENAME ' td.TESTCYCL.TC_USER_05', 'TC_USER_01', 'COLUMN'

indeed in the SQL we see the only TC_USER_01 as expected

but when we open QC - project entities -> Test instance -> User Fields we see TC_USER_05

Any ideas?

thanks,

Noam