Making changes to the catalog. [opgelost]

I can't change the date (? to 1990)!

 Date changed, awaiting referee approval. Thanks 

It's fixed.

When you've made your change request to add the mintage you've deleted the ND and start (1990) and end date (1990). I saw it so I've only ticked the box with the mintage. But afterwards I apparently clicked, out of habit, the “Accept all” button in stead of the “Accept checked lines” button and so the ND (1990-1990) disappeared and was replaced by a “?”.

Not quite right. I removed the ND and both dates to write 1990 instead of ND. But the Numista website wouldn't let me do that. It's a bug.
$50 coins: 1988, 1989, and 1990 are identical.

Coins from 1988 and 1989 are marked with dates. Why is the 1990 coin marked ND? We need to bring everything to a common denominator.

 An amended request has already been made …