@justforthelulz I don't think so. The only way I can think of is to edit Chapters 1-3, and add 4-9 after separating. A lot of people would get more confused if I do that, rather than this.
I disagree, @Kakkoiikun . I think you should do your best to keep the chapters without gaps in MangaDex and to release stuff as close to the original order as possible.