Replace not working

Hi all,
I'm experiencing an issue with the connector in one of the cubes. Although everything is set to "replace," the stage is not being cleared, and old data is being loaded together with the new data. As a result, I have to manually clear the stage to resolve it.

The log, is says replace 

Data keys are 2025M10,2025M11,2025M12,2026M1, but if i check th estage after the import i have periods outiside this range

The log indicates 9,261 lines, exacly the same amount of rows that the query produces. But the import shows 248 pages. With 50 rows per page, that would be around 12,400 rows loaded, which is quite different from what the log reports.

I'm not sure if I'm missing something here, but I haven’t noticed this happening in other data loads. I still need to replicate the issue in a different app. Has anyone seen this before? Thanks in advance!