How to update references in texstudio after commenting out citations?

When you comment out lines including citations in your latex file, the references are not updated automatically in TexStudio. You have to go to Tools and click Bibliography.

The following will appear in the Messages view.

Process started: bibtex.exe "name_of_your_latex_file"
This is BibTeX, Version 0.99d (MiKTeX 2.9.6350 64-bit)
The top-level auxiliary file: name_of_your_latex_file.aux
The style file: IEEEtran.bst
Database file #1: name_of_your_latex_file.bib
-- IEEEtran.bst version 1.14 (2015/08/26) by Michael Shell.
-- http://www.michaelshell.org/tex/ieeetran/bibtex/
-- See the "IEEEtran_bst_HOWTO.pdf" manual for usage information.
Done.
Process exited normally

Now you can recompile and view your updated references!