pro/program: 'input sel' not all statements appear from sub assembly

[Skiddy]

I have created an assembly using 2 sub assemblies 'head' and 'body', both parts contain pro program statements although for one of the 'body' part the statements were created in the assembly mode.

The statements for pro program created for the 'head' part were created within its part file itself.

But when in the assembly file and i want to regenerate the pro program how come all the statements from the 'head' part (pro program created not in assembly mode but in its own part file) arent listed under the 'input sel' option?

Is this correct or is there a way that all sub assemblies pro program statements can be shown under 'input sel'