* Cursor MyCursor is empty
* Table  MyTable has field PK. The first record of MyTable PK is 5
* Other record in MyTable have different values of PK (1,2,etc).
* The following command is supposed to append records... 
select MyCursor
append from MyTable for MyTable.Pk = nPk
* but the above works only if nPk is = 5 (that is, the value in the 
* first record of MyTable. If I try any other value of nPk, no
* records are appended to MyCursor