diff --git a/PROMS/DataLoader/PROMStoAPPR.sql b/PROMS/DataLoader/PROMStoAPPR.sql
index dd6cc39e..38ec3689 100644
--- a/PROMS/DataLoader/PROMStoAPPR.sql
+++ b/PROMS/DataLoader/PROMStoAPPR.sql
@@ -1,9 +1,13 @@
+IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[Checks]') AND OBJECTPROPERTY(id,N'IsTable') = 1)
 ALTER TABLE [dbo].[Checks] DROP CONSTRAINT [FK_Checks_Revisions]
 GO
+IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[Versions]') AND OBJECTPROPERTY(id,N'IsTable') = 1)
 ALTER TABLE [dbo].[Versions]  DROP CONSTRAINT [FK_Versions_Stages]
 GO
+IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[Versions]') AND OBJECTPROPERTY(id,N'IsTable') = 1)
 ALTER TABLE [dbo].[Versions]  DROP CONSTRAINT [FK_Versions_Revisions]
 GO
+IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[Checks]') AND OBJECTPROPERTY(id,N'IsTable') = 1)
 ALTER TABLE [dbo].[Checks]  DROP CONSTRAINT [FK_Checks_Stages]
 GO