Hi Vicki,
usually the currency conversion process is as follows:
you enter data in LC / S_NONE. The standard conversion then converts this to GC / S_NONE (GC = group currency, i.e. the currency you selected when you ran the conversion). A consolidation will then take this information and further "convert" it to CC / S_* (CC being the consolidation currency associated with the group dimension element S_*).
Could you share the script you use for the currency conversion?
BR,
Arnold