Why Zapier (Office --> Wrike) does not provide fields for start date and end date?

Hi,

I need to sync calendar of Office with Wrike. Wike >> Office works well, but in the template of Office >> Wrike, there is no start date and end date. I do not either see where to add more fields. And it is strange there are couple of fields for attachments. I doubt this is a bug?

There is a similar post 

• Set start and end date with Zapier

but I believe the reply from Stephen is wrong.  He confused what we said. It is not about the time for Zap execution. It is just about the fields of Wrike task in Zapier template.

Thanks.