As i understand from your previous post you have NexusHD2-KitKat folder which is subdivided into data & system folders. Within the data folder you create a folder called iGO and in this you copy the content including the data.zip and sys.txt as listed in my post i.e.
The content folder on the internal (ext4) only contains what I have listed below and all the rest of the content information stays on the external SD. (dictionaries is not important)
iGO
-content in this folder the following information - global_cfg, lang, speedcams, tmc, userdata
-debug
-font
-gfx
-license
-save
-ui_android
-ux
data.zip
sys.txt
On the external SD card you can either rename iGO to iGo_backup and create new folder called "Addons" or rename the iGO folder to "Addons" and have the following information in this folder;
Addons/Content
building
dem
map
phoneme
poi
scheme
skin
voice
Hope this is now clear instructions to carry out.