Dump/Export of clob and blob fields generates different file names for the same lob file every time

When table that contains LOB fields is dumped with the Dictionary tool or when the record is EXPORTed via ABL separate .blb files are generated for each LOB data.
ASCII Dump or the EXPORT statement writes CLOB and BLOB fields to uniquely named .blb files.
The unique .blb file names are re-generated and therefore different every time a record is exported with it's associated LOB.
ASCII Dump or EXPORT of clob or blob fields generates different file names for the same lob file.

Data Administration dump of LOB objects with the associated table, generate different .blb file names for the same lob file every time that table is dumped.
File names for .blb files are different every time they are dumped from a new EXPORT session, even when data has not changed.

When the dump directory is not emptied before each dump session it fills with duplicate data files with different names 
Duplicates cannot be identified by relating a specific .blb file to a specific table
Cannot use a specific lob .blb dump file name to associate with a specific table record unless the related data dump (.d) is parsed for the lob field value.

CLOB and BLOB fields are written to uniquely named .blb files:

This is expected behavior. In the current implementation, to generate unique file names the AVM uses the current process' PID and a sequence counter. It was determined that the Progress Product is functioning as designed.
 
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Write a custom export/dump routine. The following Article provides an example of a dynamic function to use as a starting point:

•  How to EXPORT a record dynamically   

Progress Article:

 How are LOB dump files named when dumped from the Data Administration tool?