过去 分词作定语改成定语从句

The question discussed yesterday involves pollution.

将它改成定语从句时,定语从句用什么时态？

1.The question that was discussed yesterday involves pollution

2.The question that has been discussed involves pollution

这两种变法什么对？

第二种与原句不对等，原句昨天这个信息没反映出来。