A "Delta" migration is necessary when you migrate some data now and some data later.

1.  Create the "Phase 2" Backup

Using Universal Migrator, perform a new backup of the source system.

2.  Re-Apply your Playbook to "Phase 2"

This is an important step.  Don't forget it.

Now, re-apply your playbook to the Phase2 database.  This is necessary so that any customizations, tweaks, or synthesized records get carried into the new Phase2 database.

3.  Copy Result_Ids from "Phase 1" to "Phase 2"

Replace the Database Names

In the following script, replace PHASE1_DB and PHASE2_DB with the names of the respective database names.

If you want to copy the Result_Ids for all tables, simply use the query below.

DECLARE @PHASE1_DB NVARCHAR(MAX) = 'REPLACE_WITH_PHASE1_DATABASE_NAME'
DECLARE @PHASE2_DB NVARCHAR(MAX) = 'REPLACE_WITH_PHASE2_DATABASE_NAME'

DECLARE @SCRIPT_INNER NVARCHAR(MAX) = '

UPDATE
    [PHASE2_DB].?
SET
    Comment = Phase1.Comment,
    Action_Group = Phase1.Action_Group,
    Action_Priority = Phase1.Action_Priority,
    Log_History = Phase1.Log_History,
    Log_Duration_Total = Phase1.Log_Duration_Total,
    Log_Updated_At = Phase1.Log_Updated_At,
    Result_Id = Phase1.Result_Id,
    Result_ReferenceCode = Phase1.Result_ReferenceCode,
    Result_Content = Phase1.Result_Content,
    Result_Content_Url = Phase1.Result_Content_Url,
    Result_View_Url = Phase1.Result_View_Url
FROM 
    [PHASE1_DB].? Phase1,
    [PHASE2_DB].? Phase2
WHERE 1=1
    and Phase1.Id = Phase2.Id
    and Phase2.Result_Id = ''''
'

SET @SCRIPT_INNER = REPLACE(@SCRIPT_INNER, '''', '''''') 

DECLARE @SCRIPT NVARCHAR(MAX) = '


USE [PHASE1_DB]

DECLARE @SCRIPT NVARCHAR(MAX) = ''
[SCRIPT_INNER]
''

EXEC sp_MSforeachtable @SCRIPT

'

SET @SCRIPT = REPLACE(@SCRIPT, '[SCRIPT_INNER]', CONCAT('', @SCRIPT_INNER, ''))
SET @SCRIPT = REPLACE(@SCRIPT, '[PHASE1_DB]', CONCAT('[', @PHASE1_DB, ']'))
SET @SCRIPT = REPLACE(@SCRIPT, '[PHASE2_DB]', CONCAT('[', @PHASE2_DB, ']'))

EXEC sp_executesql @SCRIPT