I checked your account and understand what you are trying to achieve.
You want to have a multi-stage form submission, starting from first at ArchBestProject.com/1 to ArchBestProject.com/2, ArchBestProject.com/3, etc. with each next submission going into the same entry, but different field (title, name...).
Right now, each of your next form creates a NEW entry, rather than editing the previous one, that's why the entries are added to different 'lanes', as can be seen below.
To achieve what you require, the _id of the first insertion should be passed to next stages (ex. via query parameters). Then it can be used to update the object. It requires coding/testing to see if an entry exists, and then edit it rather than create a new entry.
You can pass the above rough guidelines to the developers and experts at Wix Forum, where they will be able to help you with the coding. Wix Support does not provide detailed assistance with custom code.