Practical IFR Question (for centre controllers)

This weekend, I'm flying almost due south 340 nm from Ottawa to 
Philadelphia, as I mentioned in a separate posting.  Inevitably, the legs of 
my planned flight zigzag around a track of 180 deg M, some slightly on the 
east side, and some slightly on the west.  Consider this part of the trip, 
all on V29:

  CORTA-CFB: 198 deg M, 31 nm
  CFB-LVZ: 169 deg M, 57 nm
  LVZ-ETX: 190 deg M, 42 nm
  ETX-PTW: 174 deg M, 22 nm

Assume I hit CORTA at 6000 ft.  Will Centre drop me to 5,000 ft at CFB, then 
bring me back to 6,000 ft at LVZ, then drop me back to 5,000 ft at ETX 
(actually, I'd probably be starting a descent by then anyway)?  Or will they 
likely just leave me at 6,000?  It's not a big deal of course -- mainly just 
a matter of curiosity.  Toronto Centre has never been too concerned about my 
flying WAFDOF for turbulence or (risk of) icing, but our airways are not all 
that busy below 10K ft outside of terminal areas, especially in IMC.


All the best,


David