Your comments

I insert some data for example and i export CSV file.
Fuelio has created a directory and put into the file (in my  case into sd card).
For manage the file with pc, i use dropbox.
I hint you to try do as.

I hope help you.
PS: excuse for my poor english. :(
I resolve my issue. :D
I can see data import as new car (one new car for every import try).

Another similar case.
I export CSV file from Fuelio and i used it as model for add other data.
After successfully import however i not see its in the history.

PS: compliments for app! :)