Replace CV button doesnt work on career junction website

This website is relatively simple to find. My only issue is that when you upload a new updated cv it messes up all your details. Meaning all your work experience is incorrect and makes no sense. They expect you to keep individually editing each and every experience section EVERYTIME! Only to find that the "replace cv" button is clearly malfunctioning. So please get your IT department to invest time and resources to actually look into this. Its absolutely frustrating and daunting!!! Its repetition and its a waste of time and only adds to the already tedious & unpleasant task of job hunting online. The process can at least be seamless and not add more stress because of a website thats malfunctioning!!! Disappointing to say the least!! Fix it please!!!