Linda, I'm very surprised with your answer. Are you not an examiner yourself?
Your name rings a bell from my PLD days thats all.
For the purpose of licence issue the skill test will remain valid for 12 months. End of story! Even if you do skill test on MEP.
The only difference is, if you take 364 days to apply for CPL licence where you passed the CPL test on a MEP- the MEP rating once added only has 1 more days validity. If you took it on a single engine, you'd have a year and a day.
Again, for licence issue the skill test is valid for a year, regardless of whether you took the test on a SEP or MEP.
Linda needs to re read her examiner information...
VJW