Migration from ISU to CRM

Hi,

We are populating SAP ISU via Emigall and proposing to replicate all customer data including BP, CA and Contract and all technical master data including CO, Premise and Device. This is a lot of objects and data to replicate from ISU to CRM which will mean our migration takes a long time.

Are there any other options to populating data into CRM? Would you advice LSMW load into CRM and Emigall load into ISU?

KR,

Michelle