Hi Utnik'
I'm going to go back into Scribus and see if I can grasp Paragraph Styles and it seems Character Styles as well. Google is of poor help with this and the best Scribus source seems to be the Help Manual from at best the early 2011-12's (wiki.scribus.net/canvas/Help:Manual). By complete chance, on another subject, I discovered the most though article on Styles, you're in there too, by GarryP (forums.scribus.net/index.php? topic=2783). As you probably guessed, I've wandered Google and the forums for weeks to the point I was thinking of giving up on Scribus. So much in both places is arcane, incomplete, off-point, and on Google should just be removed.
I noted on File>Import that no importer selection options window came up in the import dialog box, just the box for the file. Perhaps this is just a function of macOS, it did import something as described above.
My note of appending was only in reference to wondering where the bulk of the .odt import went, since the cursor was on a text frame late in the Scribus document. Also after the import fiasco, and my deletion using, I think, Edit>Undo, I got that odd black and white crossed circle pie. The pie made me wonder if the bulk of my .odt import must still be hidden inside my Scribus document and not allowing further imports.
I've decided I should be posting in the Beginner's Category and asked a question there as to how both the import and the Scribus document treats blank pages at the beginning or anywhere inside either document.
Is trying to use Page>Import the source of the crossed pie symbol?
Thanks