Make a backup of the data
Follow the solution
Use this to scan the inside of the tab
DELETE FROM [SRO_VT_SHARD ].[dbo].[Tab_RefNest]
Then, place a file This In Parthenon (C)
Then use this
USE [SRO_VT_SHARD]
GO
BULK INSERT Tab_RefNest FROM 'C:\RefNEst.txt' WITH (FIELDTERMINATOR = '\t')