Reusing large candles on plates

I'm severely allergic to scents and parrafin wax. I'm truly grateful for the plates, altars, and Ether oils. My question is for the plates and altars. If I use a large beeswax candle (which are super expensive), will that candle have the energy of that spell on it? For example, lets say I use an Omni Spirit plate and burned the candle for 15 hours for myself, then I turned the candle off and a few days later I placed it on to a Wealth 11 plate for another person, is this acceptable and will not create a conflict? I'm assuming this is a big no no, but Conjure staff, please let me know.

For now, I will note what spell was done and either use that candle again with the same altar or plate or use another complimentary potion or plate to layer the work.