Hi...
If production system have transaction data using current currency,
You need SAP's SLO(SAP System Landscape Optimization) service releated to currency conversion.
If you activated material ledger using multi valuation function, you will meet problem due to currency
change.
I recommand that you should contact SAP SLO's team.
Refer to Site : https://websmp206.sap-ag.de/~sapidb/011000358700001209902010.pdf