Why are boundary conditions incorrect after a post1 combination
of harmonic real and imaginary results?
The real component of applied loads is stored with both the real
and imaginary results, so the combined value reflects that. For example,
if an SRSS combination is done, the combined value will be the real value
times the sqrt(2) regardless of the actual imaginary component of the load.
Due to this effect it is not possible to re-enter solution and solve with the
combined boundary conditions.