What remains to be discussed?
The libel trial is over long since and the OG investigation has no legal standing in Portugal. It remains to be seen whether the "re-opening" of the file by the Portuguese Judiciary was anything other than a device by which The Met could ask questions in Portugal under Portuguese law.
I think that even if you are correct in your assumption that the Portuguese reopened Madeleine's case only as a vehicle to assist Scotland Yard lawfully ... it does not cancel out that there is an active investigation continuing into her case.
Personally speaking I think you are wrong.
I think the Portuguese reopened their case as a result of discovering when carrying out their own review that to do so was merited by the evidence. Whether or not their initial investigation was prompted by what was happening as regards Operation Grange, the Policia Judiciaria were hardly going to advise their bosses not to bother with reopening Madeleine's case if they were aware there was evidence worth investigating.
I think they are as keen to solve Madeleine McCann's case as Scotland Yard are. Therefore I think it is wrong to denigrate the investigation by questioning if there is one.