Oracle BPA does a great job importing into BPEL, but here are a few items that need to be manually configured:

• Process Payloads need to be copied, Assigns to set up parameters
• Import from BPA to JDeveloper tool, the build.xml and build properties are often missing and need to be copied from other projects
• Human Tasks need to have forms assigned
• Embedded Java tasks cannot be round-tripped back into BPA, so they shouldn’t be used