Did you confuse the old-style ´main´ one in centre with the faroutoftown in the sugarbeet fields TGV stop? You have to delete the original stop and then set up new trip. TRAMs=payable (less as 2€) connect TGV with old centre.
If its just another minor stop on a local line: do not bother.
Thank you for your reply. Obviously I don’t know enough about Reims’ trains stations! I need to do some research but thanks for the advice to delete and then set up a new trip. Your advice is much appreciated.