was/were supposed to do 和is/are supposed to have done是一样的意思吗?

问题描述:

was/were supposed to do 和is/are supposed to have done是一样的意思吗?
You are supposed to have met me here
You were supposed to meet me here

我觉得基本意思是一样,个人理解
You are supposed to have met me here 【你本应该在这里见到我】
You were supposed to meet me here【你内会应该见我】