How do I determine my correct ETS date?

So I am in the process of getting out of the Army and myself along with my S-1 section is having an issue determining my ETS date. Originally my ETS date was 19 November 2018, however I was supposed to be on a TCS to Egypt, which put an IFSTE in and set my DEROS to 01 April 2019. The TCS was canceled and I remained at my current unit however my ETS now says 19 Feruary 2019 which matches neither dates. In AR 614-30 it states that "Approval of IFSTE does no constitute a basis to retain soldiers beyond their scheduled ETS or ESA." With that being said shouldn't I keep the original ETS date of 19 November 2018.