[rules-users] ILog JRules to Drools Migration

[Simon]

Has anybody ported a large number of rules from ILog JRules to Drools?  
If yes, I'm very much interested in the following information:

- how did you do the migration (automatic vs. manual)?
- if automatic, how exactly (AST to AST transform, custom JRules  
parser, ...)
- which features of JRules did you use (decision tables, rule  
tasks, ...)?
- which migration issues did you encounter? how did you solve them?
- ...

Thanks
Simon