Cancelling exemptions and claiming them later?

Hi guys, quick doubt — I had conditional exemptions which later recently got converted to full exemptions. However I received a paper less than what I’m eligible for and my college is in process of updating the accredited modules of that paper that will be eligible for exemption. Can I cancel them now and revert it back to conditional and claim them again later? I’ve paid 0 fee for this as my university has acca accredited with bcom. Has anyone done this before? Any guidance would be highly appreciated.