The KEEPREGTAG statement retains the original registration tag from the registration being copied when generating the extraction map. This statement is valid only with the CREATEXMAPS statement.
Do not use the KEEPREGTAG statement with the following REG_COPY statements:
CHECKXREF
MODIFY MUF_NAME
MODIFY NEW_DBID
RENAME DBD
RENAME IMSMAP
RENAME IMSSCHEMA
RENAME REG_NAME
These statements might cause a different registration tag to be generated for the copied registration and the extraction map.