Delete "Dead"-financial items in BW

Dear fellow sufferer and fans of SEM-BCS,

there is one problem I didn't find any solution yet.

I use 2 methods to get financial items into the BCS (and then into BW by synchronisation): Flatfile Upload and normal customizing.

Now, I switched the type of upload-modi once to "Overwrite existing data" and after that I switched it to "Delete all existing data". Now that stupid SEM-BCS doesn't know about those "deleted" items anymore, but in BW the characteristic ZMCSITEM (as we called our CS_ITEM) still has those entries.

The problem is I can't delete that ***** items. BW doesn't let me kill them.

Also that UGMDSYNC and UGMD_BATCH_SYNC (via se38) do not let me kill them...

But we need the very latest master data status because we use it in VC to map those items with FI-accounts.

May anyone have a solution for this?

Thanks a lot in advance.

BR

Benjamin Maier