No issues in v8 where incompletes are showing as completes.
You're not mixing up the sys_RespStatus with the sys_DispositionCode are you?
sys_RespStatus - Respondent Status: 2=Incomplete; 4=Disqualified; 5=Qualified/Complete
sys_DispositionCode - Optional custom code assigned to data record when the respondent terminates.
The disposition code will be blank by default. It is generally used when you have multiple terminations and you want to distinguish between them.