I'm using Apogee Prepress 5, but we don't send plates from it, so I can't confidently answer your question because it might depend upon parameters in task processors I don't have.
Try adding an "Archive Result" action to your platesetter or RIP task processor in the job plan, then archive, restore and plate to see if it rips it again.
We are still using Printdrive for storing raster images, plating and proofing. It requires the "Printdrive" task processor which may cost extra to install. Apogee Prepress sends the raster images to Printdrive in the same manner that series 3 did, and we can update just single pages without reripping entire flats because we have the DQS option on our Printdrive server. I would much prefer this over having everything within Apogee Prepress. If our RIP goes down, we still have already ripped jobs in Printdrive that we can plate if the customer doesn't request changes, and if the Printdrive server goes down, we can rerip into a new temporary reincarnation of Printdrive. If everything were in Apogee Prepress and it had a major failure, the press guys would have to take a short vacation. Another advantage is that one machine can be ripping while another is plating a job and proofing another. If all of this were on one machine, the resources would be divided. Of all the Agfa software I have seen, I would say Printdrive is the most well-made by far.