How do we use our .jar file of Re-Usable Business Components in 11g?

Hi All:
We have developed a library of re-usable Business Components in 10g utilizing the instructions found here:
http://download-west.oracle.com/docs/cd/B31017_01/web.1013/b25947/bcadvgen007.htm
We are now planning on migrating to 11g, so we need to know how to implement this re-usable business component library.
Is it possible to use it as it stands created in 10.1.3.3?
Or do we have to migrate it over? And how is this done since we still have applications that use it in 10g?
Your input is very appreciated since this is an important step in our migration plan. Doing this correctly is crucial to our shop. We have been trying a few things, so far with no luck.
Thanks very muich.
Mary
UofW

Shay:
My colleague that received the errors is going to unexpectedly be off for a few days, so I tried to re-create the errors so that I could get back to you. What was essentially happening was that on certain tables, the first column was missing from the EntityImpl. These tables MIGHT be those that had a primary key that when JDev removed the underscore, had the same name as the Oracle table. For example the table name was ResidenceCode and the primary key of that table was Resident_Code and was found as the first column in the table. HOWEVER, when I tried migrating our reusable business components libarary .jar file, using 11.1.1.2.0, I did not experience the same errors, so I'll get back to you. She was perhaps using an older version of 11g?
But I do have one question. Can we use a .jar file of reusable business components built in 10g in 11g? As you can imagine, this library is being used in other applications, and we'd like to prevent having two copies, if at all possible. Because of all the structural changes, I am guessing we can't, but I'd really appreciate your reply.
I have found the documentation *36.7 Working with Libraries of Reusable Business Components* at http://download.oracle.com/docs/cd/E12839_01/web.1111/b31974/bcadvgen.htm#CHEFECGD with respect to 11g. If you know of any other 11g considerations with respect to this task, that would be great as well.
Thanks Shay, I really appreciate hearing from you.
Mary
UofW

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