prior to relisting

Is there an expert who can post some simple dot points in terms of what SP holders like me need to do prior to CSD (may not be CSD any more) relisting?

I think I've been slack in reading CSD's announcements till I saw news about sp replacement and adjustment done to my holdings. I'm a bit worried about my investment now. Would I as an existing holder have entitlement for the sp replacement? And would I have to go ahead purchasing in order to maintain my existing holdings activated? Would my existing shares be transferred if CSD had another name when it is relisted?

Can anyone rescue me? !!!

Many thanks in advance