ALTER TABLE [INVOICE]

DROP CONSTRAINT [INVOICE_PK] WITH (MOVE TO SECONDERYDATA)

After the move, we now recreate the PK Constraint:

ALTER TABLE [INVOICE]

ADD CONSTRAINT [INVOICE_PK] PRIMARY KEY CLUSTERED

( [column name] ASC

)WITH (IGNORE_DUP_KEY = OFF) ON [SECONDERYDATA]

You're specifying the FG name twice. You just need to do this

ALTER TABLE [INVOICE] DROP CONSTRAINT [INVOICE_PK]

ALTER TABLE [INVOICE] ADD CONSTRAINT [INVOICE_PK]

PRIMARY KEY CLUSTERED

(

[column name] ASC

)

WITH (options)

ON [newfilegroup][/CODE]