Searching RM12 database with RM11

We have a large database which we’re editing using RM12, so we can link to pdfs for a Web Publisher database.

Other people in the organisation have RM11, and we are using RM11 for cite-while-you-write.

We’ve recently found that searching RM12 databases, RM11 crashes when you search on the Ref ID field.

Is this a known bug? Is there anything we can do about it apart from using other search terms?