Update - just noticed it's not based on the day, it's only saving the last 10 conversations in total in my Dialogues log..... meaning if I were to say talk to one individual NPC 10 times in a row (talk, take my leave, talk again etc) it would wipe ALL the rest of my adventures conversations from the log...leaving only my brief 10 conversations with the one NPC in it.
Just tested this... so just wanted to know if this is how it's supposed to be, or are all my save games bugged and I need to start again or possibly reinstall.
Thanks for any help in advance, if your Dialogues log has more than 10 NPC's conversations in it, you'll be able to identify if this is a bug or not I'd say
