Originally by: CCP Chronotis
There is indeed an issue where you can reprocess the starbase modules whilst they are still regulated by the old market supply prices and use those materials to manufacture other more expensive modules. This unfortunately was a timing issue with our transition to planetary interaction from old to new supply routes and as can be seen, was not handled in the appropriate way.
For those of you looking forward to Planetary Interaction on June 8th, do not worry as these issues will be cleaned up and appropriate measures will be taken to ensure there will be a viable market for you. Those of you currently gambling on profiting from this error should heed that as a warning before splashing more isk here.
Apologies for this bug and further updates will follow in the future!
Linky. I bolded the interesting part.