SLT,
i think it's a judgement call. Yes the MATS1 states that an amended clearance overides any previous clearance which means that any level restriction issued in a previous clearance needs to be repeated. That said, if i told every pilot the DME/level restriction again, about half would come back with a ' i know you told me' response. Another consideration is the amount of R/T time taken up doing this (summer's coming
). As i said it's a feel thing. If the pilot you're talking to is british/familiar with the airspace and sounds clued up i'd probably omitt the previously mentioned restriction. If it's johnny foreigner then....
Maybe not the official clarification you wanted but a lot of my control comes officially unclarified
RP45