umxMI instead
xmuMI(model, vector = TRUE)mxModel to derive modification indices forumx_explode_twin_names,
  xmuHasSquareBrackets,
  xmuLabel_MATRIX_Model,
  xmuLabel_Matrix,
  xmuLabel_RAM_Model,
  xmuMakeDeviationThresholdsMatrices,
  xmuMakeOneHeadedPathsFromPathList,
  xmuMakeTwoHeadedPathsFromPathList,
  xmuMaxLevels, xmuMinLevels,
  xmuPropagateLabels,
  xmu_check_levels_identical,
  xmu_dot_make_paths,
  xmu_dot_make_residuals,
  xmu_start_value_list