Not sure if this is a known bug or not but I was surprised by how something so fundamental is buggy. If you save an FX Chain preset
the In and out sliders reset to 0 when you re-open that chain. Anybody else confirm, then I'll submit it.
 
Sonar X3c, x64, Win 7 x64 3930k

Which version of Sonar? (if you could update your footer like mine that would be great).

totally forgot, added it in the OP

Anybody else??

I am pretty certain this is not exclusive to my system so I will submit a ticket

I am not sure it is a bug. The input slider setting would depend on the incoming signal.

Scook, you completely misunderstood. Here are the screenshots:
 
Before:

After:

 
Clearly, the input and output sliders are reset to 0 upon reloading the saved FX Chain preset.

Yes, that makes sense and that is how I took your post. The preset contains the content of the FX Chain but not the slider settings. As I wrote before, there would be no way to know what the input setting would need to be in advance. If you view it as a bug, send it in. It just looks like it may be by design. Works the same way in X2, I just tested it.

scook
Yes, that makes sense and that is how I took your post. The preset contains the content of the FX Chain but not the slider settings. As I wrote before, there would be no way to know what the input setting would need to be in advance. If you view it as a bug, send it in. It just looks like it may be by design. Works the same way in X2, I just tested it.

That doesn't add up at all. Why would a parameter like any other that is part of a plugin chain that you customize,
which is what the FX chain was created for in the first place, not retain a crucial part of its function: namely, the gain stage.
It doesn't need to "know" anything in advance because the operator sets the input and output values, then you should be able to
save it just like any other plugin.
 
Thank you for trying it out though, it is absolutely looking like a bug.

We just see the function of the FX Chain container differently. The preset is only what is in the container. The input slider setting may depend on how hot the signal is coming into the FX chain after the FX Chain is inserted and the preset loaded which would be unknowable at the time the preset was saved.