The fld file is not properly imported when using single mode expansion
void ExpListHomogeneous1D::v_ExtractDataToCoeffs, the
offset, which is 2 for single mode expansion, is not added when building the
This causes the restart file and the bodyforce file cannot be properly imported, since the planes they contained are IDs 2 and 3.
On the other hand, however, the baseflow file is on plane ID 0. If we added the
m_zIdToPlane, the baseflow will not be corrected imported.
We need to fix this problem.