Some systems only allow documents to be linked to matters.  These scripts will allow you to restore data into these systems. 

When Matters No Longer Exist

The following script with synthesize matters for document related to matters that no longer exist.

--There are documents that are attached to matters that no longer exist
--Create dummy matters out of the missing links.

INSERT INTO __M_Matters (
    Id,
    Final_ReferenceCode,
    Final_Subject,
    Final_Description
)
SELECT DISTINCT
    Final_Parent_Id, 
    Final_Parent_Id,
    CONCAT('Orphaned Matter ', Final_Parent_Id), 
    CONCAT('Orphaned Matter ', Final_Parent_Id)
FROM
    __M_Documents_Digital_Files
WHERE 1=1
    AND Final_Parent_Type = '__M_Matters'
    AND Final_Parent_Id NOT IN (SELECT Id FROM __M_Matters)

When Documents are Related to Contacts

If there are documents that are only related to contacts, this script can be used to create a 'General Matter' for each client with documents and restore the documents into those matters.

--There are documents that are only related to matters.
--Create a 'General Matter' for each contact that has documents
--And then move the documents into this matter.

--Variables we can change
DECLARE @PREFIX NVARCHAR(MAX) = 'CONTACT --- '
DECLARE @Status NVARCHAR(MAX) = 'Archived'
DECLARE @ReferenceCode NVARCHAR(MAX) = 'General Matter'
DECLARE @Subject NVARCHAR(MAX) = 'General Matter'
DECLARE @Description NVARCHAR(MAX) = 'General Matter'

--Create the Matters
INSERT INTO __M_Matters (
    Id, 
    Final_Status, 
    Final_ClientContact_Id, 
    Final_ReferenceCode, 
    Final_Subject,
    Final_Description
)
SELECT DISTINCT
    Concat(@PREFIX, Final_Parent_Id), 
    @Status, 
    Final_Parent_Id, 
    @ReferenceCode, 
    @Subject,
    @Description
FROM
    __M_Documents_Digital_Files
WHERE 1=1
    AND Final_Parent_Type = '__M_Contacts'

--Move the documents to the matters we just created
UPDATE
    __M_Documents_Digital_Files
SET
    Final_Parent_Type = '__M_Matters',
    Final_Parent_Id = CONCAT(@Prefix, Final_Parent_Id)
WHERE 1=1
    AND Final_Parent_Type = '__M_Contacts'

GO