Schema mapping stopped working

Hi folks,

We used to use schema mapping for calculation views that worked something like this;

DEV VIEW CONTAINS

select * from dev.mseg where .....

Then we export/import via delivery unit to staging where we would have schema mapping like this;

Authoring schema = dev

Physical schema = stg

But the imports are failing with error 'DEV schema does not exist'

This used to work and I'm not clear why it no longer works.  Both servers are REV82.  Any suggestions?

Thanks.

PS: We do not have the same default schema name in each of our dev, stg, prd servers.  This is why we are hard coding schema into the calculation view.