Why the LOOP?

>
>I loop through a table multiple times and mark records for deletion that meet certain conditions. How come, even though I have SET DELETED ON, the deleted records keep appearing in the continuous loop/scan.
>
>I have the following code:
>
>DO WHILE .T.
> SELECT mytable
> SCAN ...
> IF ...
> DELETE && Mark record for deletion
> ENDIF
> LOOP
> ENDSCAN
>ENDDO
>
>In the Init of the form I specify SET DELETED ON. When I browse the mytable it shows no records unless I specify SET DELETED OFF and rebrowse mytable.
>
>Any ideas? I must be forgetting something. Thanks for helping.