Why is RECOVERY=ALL needed on the FCT entry of the file? The RECOVERY=ALL only records the after images to the FWDRECOVLOG the before images are recorded to the system log.

Document ID : KB000027665
Last Modified Date : 14/02/2018
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The comments from the CICS Resource Definition Guide SC33-1684 is as follows:

RECOVERY=ALL Log before images to the system log, and after images to the journal specified in the FWDRECOVLOG attribute. (Coupling facility data table restriction:
Records written to the FWDRECOVLOG are independent of any automatic journaling options that may be set.

RECOVERY=ALL together with FWDRECOVLOG provide a means of separating the needs of a forward recovery utility from those of automatic journaling. Additional information, not available via automatic journaling, is recorded on the FWDRECOVLOG. RECOVERY=ALL plus FWDRECOVLOG is the recommended way to provide forward recovery support.