Extraction ignores selection criteria

Question

I am extracting data from Infotypes in R/3.  I only want the current record, i.e., the one whose ENDDA equals infinity, i.e., 12/31/9999. So given thousands of employee records, I only want to extract one per employee.
In the Selection tab of the infoPackage, I enter a range that covers around 100 employees, for test purposes; and in the field entitled ENDDA, I enter 12/31/9999.
When I specify these selection criteria in RSA3 as a test in the source system, I get exactly what I specified, my 100 or so records, each one with ENDDA = 12/31/9999.
But when I run the extraction in BW, it pulls in almost 900 records, with every record for each employee. 
What can I do to exclude the non-infinity records??
And why are these records pulled when selection criteria does not specify them?

Answer 1

Thanks guys for the answers, but I have indeed tried every way possible to enter these selection values, in the first field for ENDDA, and in both the ‘from’ and ‘to’ fields.
Also, I tried entering 99991231, but hitting the ‘Check’ button reverts it back to the proper format of 12/31/9999; I did check the debugger option while testing it in RSA3, and indeed internally ‘ENDDA’ has the value ‘99991231’.
I tried starting the infoObject with no PERNR values, with only the infinity date as selection, but the job bombed. Why does it work in RSA3, but not when invoked with an RFC? From BW ?
I have tried every way possible, and I still get a boatload of records for each employee, when all I want is the one with an infinity date of 12/31/9999.