For a successful migration overall, obtain a basic understanding of the CCL
language. See the
CCL Programmers Guide before performing
any conversions.
Note: Data models containing joins should be recompiled when migrating
from ESP 5.0 to any subequent version of the product. Failure to do so may prevent
the compiled data model from being loaded by the server. In the case that the model
does load, the results produced will be incorrect.