Escherichia_shigella complex not displayed even after taxonomic assignment

i am using RDP classified text files as input for taxonomic assignment and visualizing using megan, but the Escherichia_shigella even though a prominent taxa in my samples (Human gut) seem to be not displayed in the NCBI tree generated in MEGAN. how do i sort the problem, if i try altering the text file used to generate RMA6 files the resulting RMA6 files do not show any taxonomic assignment.
please help me out in rectifying the problem.

Please send me the input file and I will take a look