Spotfire 7.5 Replace data table and embedded data

I have a data table A - Import Data - Load on demand and a data tabes B and C ad pivoting of A. 

Datatable A have a lot of rows so I decided to replace data table A with A' as Keep data external - Load on demad but the replacing change B and C data tables as embeddeed. Why if A and A' have same fields?

How can I solve?

Thanks

(1) Answer

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