Hi,
I am unsure about the budget profile and the currency translation relevant settings.
Is it happening only at the IM level? Can you please co-relate the currency conversion rates at the WBSe Level as well. Once done; please compare the budget profile for IM and Project.
If not able to identify the cause of differences please raise the incident on SAP.
Hope it helps!
Thank you and regards,
Varshal Kachole