Are apps compiled with older JDE compatible with JDE 6?

[shendz]

Hi experts,

Have any of you guys had experience with porting over your app that is compiled using older Blackberry JDE to devices running JDE 6 (BB Torch) for example?

I am having an assumption that apps compiled with older JDE are likely to be compatible running on newer OS. Is this the case with JDE 6?
For example, I have a compiled app using JDE 4.5, would it run on devices with Blackberry OS 6?

I tried it on BB Torch simulator, and then I load my cod file. It does not listed anywhere. Torch does not have 'Downloads' folder. Also, the simulator is buggy, it only shows the LCD part (and I did not choose to 'show only LCD' on the main menu). It has spacious white blank space around the LCD where the physical appearance of the device should render, so I assume my loaded cod file is not showing up because of the simulator is buggy.

Any advise?

[SwiftRavenSoftware]

Technically "yes", but truthfully "no".

Just one example is where RIM introduced some bug in BB 6 so creating an empty ObjectChoiceField with an empty content object array throws a NullPointerException. That's technique has always worked in every earlier version, but now they went and screwed it up, so I had to change code and recompile to pass it a null instead.

So technically, yes it should be forward compatible. But I'll say no because new bugs and things break existing functions. There's other BB 6 broken features described in the RIM support forums too.