SNP heuristics and optimiser using transport lane validity dates

I am using APO SNP 5.1.

In particular I am trying to use the SNP heuristics and optimiser for supply planning.

Can anyone confirm whether transport lane validity dates are respected by (a) SNP heuristics and (b) SNP optimiser, ie no transport requisitions will be created during times when the transport lane is not 'open' in terms of validity dates.

Thanks for any advice on this...