>Did you change the field type to Currency (Y)? If so, the data is stored as a BCD quantity with 4 decimal places; you need to alter the mask on the report form's field references, or convert the field to a Numeric for output using MTON(); Numerics respect the SET DECIMAL settings.
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>Currency fields and variables have a nasty habit; if there is even a single Currency datatype in an expression, the type of the result of the expression becomes a Currency type. This can result in subtle rounding problems on multiplication, division and transcendental operations, different from those experienced by type N expressions. there are distinctive advantages to currency datatypes in addition and subtraction operations involving very large or very small quantities because of the BCD representation - the same advantages accrue to other math operations AS LONG AS NO INTERMEDIATE OR FINAL RESULT HAS > 4 DECIMAL PLACES OF PRECISION.

I don't think it's BCD. It's an 8-byte integer internally, where the value is divided by 10000 when getting converted into other number formats.