Link a field from one deck card to another deck

Hi everyone,
This might sound a bit strange but please read on.
So I am learning Japanese. I have been through a kanji deck (kanjidamage) and now I going through a Japanese Core deck that contains some of this kanji. I have written my own mnemonic in the kanjidamage deck which I would love to link over to the Core deck. All the semantical stuff like I should know all the kanji now and this is not the purpose of the learning theories of anki.
Can I link the mnemonic field from the kanjidamage deck’s corresponding card to the field of the kanji Core deck? I could cut and paste the info and be done with it but just seeing if there is a better answer. also I do realize that the core deck card may contain multiple kanji but just one link will be okay.