Fix bug in "date_created" of SuiteCRM (SugarCRM fork) Cases object

We have customized instance of SuiteCRM with some new scripts for automatization. The problem is that for some reason, when we modify the Case object, system also update it's value of date_created. That is not normal behaviour. Value of "date_created" field should be uneditable. As you can see on 1st screenshot, both Date Created and Date Modified have the same value. Then I modified exacty the same case and again both Date Created/Date Modified are the same. It shouldn't be like that, Date Created must stay the same all the time. Type "I understand" in your offer if you understand me or ask the question. Otherwise you are bot, and your offer will be ignored. 30$ is the maximum budged I can offer for that work