After upgrading to v5.8, we can not anymore import objects with a relation to an external database object.

Setup business space:

BO "Product", with attributes:

naam (plain text)
CompanyRemote (peer relation)

BO CompanyRemote (using existing table), attributes:

compname (primary key, plain text)

When I import a csv like this:

Product.CompanyRemote.compname,Product.naam 
Mercedes,Magic Car II

So I want to use the "compname" of my CompanyRemote as a relational key for importing Products.

But when running the import I get the message "Internal error".

Logfile gives:

2014-06-03 09:02:03,501 IMPORT Default#admin -Importing business object Product
2014-06-03 09:02:03,532 ERROR Default#admin -Error running a query to find object instance in row1 null
2014-06-03 09:02:03,544 ERROR Default#admin -Error reading input file. Importing data has been terminated.
java.lang.NullPointerException
	at com.bas.basserver.executionengine.F.B(Unknown Source)
	at com.bas.basserver.executionengine.F.A(Unknown Source)
	at com.bas.basserver.executionengine.F.A(Unknown Source)
	at com.bas.basserver.executionengine.U.A(Unknown Source)
	at com.bas.basserver.executionengine.I.execute(Unknown Source)
	at com.bas.basserver.executionengine.U.execute(Unknown Source)
	at com.bas.basserver.executionengine.ExecutionEngine.A(Unknown Source)
	at com.bas.basserver.executionengine.ExecutionEngine.A(Unknown Source)
	at com.bas.basserver.executionengine.ExecutionEngine.A(Unknown Source)
	at com.bas.basserver.executionengine.ExecutionEngine.importData(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.bas.basserver.bsmanager.F.B(Unknown Source)
	at com.bas.basserver.bsmanager.F.A(Unknown Source)
	at com.bas.basserver.bsmanager.F.A(Unknown Source)
	at com.bas.basserver.iopipes.ComponentSink.processMessage(Unknown Source)
	at org.openadaptor.adaptor.STPipelineController.processMessage(Unknown Source)
	at com.bas.openadaptor.NonTransactionalController.processMessage(Unknown Source)
	at org.openadaptor.adaptor.AbstractSimplePipe.processMessage(Unknown Source)
	at org.openadaptor.adaptor.STPipelineController.processMessage(Unknown Source)
	at com.bas.openadaptor.NonTransactionalController.processMessage(Unknown Source)
	at org.openadaptor.adaptor.AbstractSimpleSource.processMessage(Unknown Source)
	at org.openadaptor.adaptor.AbstractSimpleSource.sourceProcess(Unknown Source)
	at org.openadaptor.adaptor.AbstractSimpleSource.sourceProcess(Unknown Source)
	at com.bas.openadaptor.A$_A.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:662)

Can this be fixed for 5.8+?
BTW: on v 4.9 this was working fine.