How BDLS works exactly?

Hello,
I've run BDLS report on my system after the system refresh and by coincidence I found following fact:
In table EDP13 there are two columns that contain logical names - RCVPRN and RCVPOR. But only RCVPRN column has been modified by BDLS report. The other column is still having old values.
<b>Why is this happening? Is this ok?</b>
In help.sap.com documentation I've found following information:
<i>The report performs the following steps:
1. Determines all the active, transparent database tables whose fields have references to the following domains: LOGSYS, EDI_PARTNUM
2. Converts the field values to the new logical system names
3. Updates the database</i>
I am not sure how to understand this.
<b>Does this mean that table has to have a foreign key properly defined to be correctly converted? Cannot this lead to inconsistency? If so - is BDLS reliable?
Can anyone please explain how exacly BDLS report works?</b>

Hi John,
Particularly for table EDP13 it is not a bug. This table stores partner profile outbound parameters and RCVPOR is the receiver- so I think it should not be changed.
Otherwise in general - Yes, BDSL is not reliable. SAP Clearly states: "Do not use it for production systems as it is not guarantee it will convert all tables"
BDLS works by scanning only all transparent tables and checking all fields (unless you explicitly restrict the tables range). If a feels has domain LOGSYS or EDI_PARNUM it is checked for the old Log. Sys. Name and replaced by the new one.
It does not work in the following cases:
-if an applications uses tables that do not reference these domains
-if data is saved as part of fields in cluster or pool tables
-If the new logical system name already exists in the system, it can cause errors for tables in which the logical system is key field or unique index (for example, COFIO1)
Regards

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