To use RTF and story editor workaround:
- edit text inside librewriter, use font that is used in scribus later, apply bold/italic to text and save as rtf,
- create blank Scribus doc, import styles you use inside main doc, import text, you will get text with direct formatting
- go to story editor and change paragraph styles there to yours using switch on the right side
- copypasta text into main doc
I wasn't able to do it using ODT as import filter seem to apply all formatting directly, so changing paragraph style do nothing.
I'll have to think about workflow here, but it should look like this:
- import odt (with character styles applied correctly)
- search-and-replace character styles to your own (no tool for that I'm aware of)