When you try to migrate the GL Account Balance, migration throws below error message for Projects which are of type Customer Projects.
Select Journal Entry Type 00088 for (multi-) Customer projects for Sales
The General Ledger entry contains multi-customer projects and is not supported in the GL account migration.
This feature is not available in the current release of SAP Business ByDesign.
You can only migrate direct projects, if you want to migrate the above scenario you have to do it manually in respective General ledger.
KBA , AP-RC-BCT , Business Config. Tools (SAP Business ByDesign , Product Enhancement