Larisa, tried it in CC. Indeed as Luky says, if the style exists, this one is used, if not, then all goes fine. I often copy a small part of text to another doc just to have the para style in the new doc, but if the name exists, the old para style is not “copied”, the local one is used.

Not much info given. OS? INDD version? Is it created in a newer version?

Create para styles with para rules above set to “on” for the first footnote and select the right color. A second para style with no rule above for the next notes on the same page.
Uncheck the “rules on” in the footnote option panel in the type menu. That way you can create different colored rules.

Getting lots of Word files, we made a macro which creates most of the styles needed (bold, italic, super or subscript, underline, bold-italic…).
All our templates have those char styles already prepared (exact same name). When we import the Word files, the char styles are applied, so no local formatting gets lost (some special cases are done by hand).

@Ari: maybe this thread can help you: https://forums.adobe.com/message/6056001#6056001.
We get a lot of fake footnotes from our sources. They all have the same “style” and are at the end of the document preceded by a title “endnotes”.
Maybe, with some adapting, this can be useful. All credits to the creator of the script of course.

You could take a look at https://emsoftware.com/products/wordsflow/. This works great.

After some looking around, I cannot find another solution than, if you make a pdf/x4 it’s correct. The setting read “fogra39”.
For some reason (default setting by ADobe because they are US based??) in pdf/x1 it’s always CGATS.