Notepad++ opens obsolete version of file -

i have file edited standard notepad of win 8.1, when open file notepad++ changes aren't visible. when open file other program changes visible.

i've tried reload file reload button changes aren't visible.

is there cache in notepad++?

update 1

i've tried disable "settings -> preferences -> backup -> remember current session next launch" , still loads wrong file.

try disable: remember current session option.

settings -> preferences -> backup -> remember current session next launch

from wiki wiki link:

when looks setting lost, common cause there  2 sets of files, 1 in %appdata%\notepad++ folder , 1  alongside notepad++.exe. either n++ doesn't read right file, or  setting saved wrong file. 

there copy of file u trying open, have delete in order right one. when u change name of file u trying open, note++ still opening wrong one?