Hi,
This thread will give you an idea..
Data load fails after archiving if data overlap... | SCN
I had opened an OSS message at the time to see what other options I may have. However, OSS gave the same explanation as the others on this forum, that if we archive a selection once, we cannot load any data that meets that selection criteria again.
I had to change my DTP to make sure no such records make it through the load in the future.
Another alternative I had considered but did not follow was to create a copy of the cube, restore the archived data to this copy-cube, delete the archiving process on the original cube (so no more archive locks remain), and then continue with loads to the original cube as before. This, however, would not be useful if you are trying to free up storage space, as the archived data would be sitting in a different cube. But it will address query performance, as it will take the data off the cube that you use for reporting.
Regards,
Loed