Evraz shares

moneytroll

They have been delisted and I was wondering what would be the best course of action.
I hold some through a nominee broker and asked them whether I could get them converted to paper shares. They said no. 

I then came across this: https://www.evraz.com/en/share-certificates/

My question is: would it be better to keep holding them via the nominee broker (II and AJ Bell) or would it be better to do the “transfer title” thing and get the paper shares? I am not certain. I suppose if they ever get relisted again (doubt it but never know) it might be ok to just let them be? Otoh one can always convert  paper shares back to nominee? (Or is this also difficult). What would you do?