I have VS2008 where i have a report that produces tablix with one field from one dataset. It displays values correctly. They are Numbers (0,00, 10,00, 15,00, 25,00 - using expression =Fields!TaxRate.Value - from thr correct Dataset). They display correctly in RDL in VS 2008 (using preview).
When I copy RDL, rename it to RDLC and open it in VS 2010 (Azure emulator), in output it creates the correct number of fields in table - but it doesn't fill them with data, they are empty.
All other fields - 100 or more, from 4 or 5 datasets - display correctly.
Here are the screenshots:
In report:

In base:

Can someone show me where I'm making mistakes?