I deduce you intend to get certification for Primus GFS.
No direct experience of this product or Primus but from previous threads i seem to recall that Primus offer considerable Guidance material for their Standards.
Yr "Packinghouse" flowchart would presumably be approx. - (1) receive (somehow) > (2)stored (somehow) .> (3)packed (somehow) > (4)stored (somehow) > (5) "shipped" (somehow)
The typical traditional haccp plan would cover 1-4
A traditional hazard analysis is typically based on risk to "final consumer" including user's preparation. i assume this product is effectively sold as RTE.
Crudely, the initial likely hazards are those (BCPA) introduced with the raw material (say "X"), plus later factors promoting growth of any (micro) hazards in "X" (eg storage temperature control, processing-packing environment temp) plus any cross-contamination factors impacting the product (eg hygiene of environment, personnel, facilities)
Theoretically all the above could be handled via PRP functions if such an approach is acceptable to Primus.
However, just as a comparison example, there are older threads here where finished, packed, chilled- frozen goods are received/stored/shipped. This is an even simpler process than present one however IIRC the storage temperature was set as a CCP for chilled (hazard = micro growth) since that particular standard (not Primus) (somehow) expected this approach.
So it may "depend."
PS - I wasn't aware that cucumbers have apparently acquired a certain micro. notoriety recently. This may obviously have a potential impact on the risk assessment of raw material for haccp plan (eg see previous post).