Budget: 1000 UAH Deadline: 1 day
I can perform through Power Query (because something tells me that you can go a bit crazy with Notepad++ on such volumes). However, if you perform certain changes once for the entire file, then when new items appear, these changes will also be applied to the new products.
Unfortunately, there is no farm of education, but if there is some roughly the same logic there, and you can explain it, I don't think there will be any problems with this. ...
Let's discuss the details privately?