Hello everyone, I'd like to retain the formatting for the chapters I write, especially so that when I'll prepare pdfs for my (I hope) Patreons they'll retain the same structure and give them the same feeling which reading on RR gives them.
Have you got anything to suggest?

Thanks in advance!

I don't know about tables, but I believe formatting is preserved when you copy/paste to googledocs. You can then save as docx and convert to pdf.

Thank you, I shall try Google docs then, much appreciated.

? The RR Q&A says they will format downloads as PDFs for premium members. As PDFs are basically picture formats of pages.  I have to assume drawings and tables are preserved when you do that. Otherwise, I'd do the bright thing, and format the document myself in a word processor prior to uploading anything so that I had such a copy of my own, and could drop such files as I chose. Its nice that RR has the ability to format within their online editor some of these simple things, for display on the RR, but of course its not a patch on what you can do on your own WP, and you remain at the site's mercy as to what , how and in what form you can export it from the online file overall.  Most WPs will convert and drop PDFs of whatever you format in your own WP to a variety of file formats. Always maintain offline copy.  Always assure you update corrections to your offline file any changes you wish kept. - and back up these documents. 

Thank you for the tips, it's what I'm trying to do. But I must say Google docs has revelated a perfectly capable ally to tackle the problem of losing table formatting I was having, sometimes it changes things on its own, but apart from that, everything is going smoothly.

yup, most word processors can handle formatting, its what they do.