Update Collation field in syscolumns table

[MrJRW]

Good Afternoon

I altered the collation of a database to become case insensitive. (ALTER DATABASE X COLLATE SQL_Latin....)

This altering updated SOME of the values of syscolumns.collation

However, running an UPDATE script to change the remaining non-null column names to my new collate value resulted in a error:

"Column 'collation' cannon be modified because it is a computed column."

? - Any ideas how to change/update the collate value ?

Thanks
MrJRW