They automatically convert when hovered over in your inventory.
Tweak: Old journals will be covered in blood to better identify them.
Warning: Transcribe once after the journal is converted, just to be safe. More explanation on this later.
Patch: I've implemented a protection for 'oldXP' which will avoid boosting the old XP.
Suggestion: Read/transcribe into your journal, craft a new one, rinse/repeat.

- To clarify: BonusXP in this case refers to the additional XP earned from starting with more than 1 point in a skill. NOT the starting levels, the bonus XP earned.
- The default for this setting for this option was false anyway, and as such that XP was not recorded. All XP that was recorded was that of an unemployed/traitless character.
Going forward this XP will not be recorded, period. This resolves a lot of issues with the math involved, and keeps the XP even across the board.

- With the term 'BonusXP' from above considered, starting level of 0 nets 25% of the raw value. (0=25%, 1=100%, 2=1.33%, 3=1.66%).
- Going forward reading will actually multiply the XP against the player's current XPBoostMap.
- This means the XP shown in your journal's tooltips will be different depending on the starting skills of who is reading it - but the raw-total will never fluctuate.

Fix: Modded skills now can be recorded again. :)
Fix: Issues with mods that change timed action speed should be fixed for good.
Added: A Gained XP counter in the skills menu - this shows the value of XP earned after character creation and what should be transcribed.
Added: Tooltip warning on journals for 'Use up XP' sandbox option.

Temp Patch: Traits that impact XP rates + the sandbox multiplier are not factored in at all.
Will be working on applying them properly soon.

Fixed: The "4X XP" glitch from 'unboosting' skills causing inverted values.

Hot Fix: Conversion (again), conversion will only occur in the inventory.
Translation: JP translation added.

Hot Fix: Corrected the conversion process. Old Journals will not properly delete and be replaced with XP filled journals.

Hotfix 2: Tooltips.

Hot fix: disabled the automatic conversion.
Old journals can be read from but not written into.

Rewrote most of the mod in order to correct a number of issues. There will likely be growing pains/hotfixes to come, you'll probably get some free XP with on-going characters.
Your old journals should be swapped for the new journal item automatically.

Update: The mod no longer tracks XP as it is earned, instead it determines your starting levels, bonus XP, TVXP, etc, to determine what should be transcribed. This means the mod now allows an easier transition enabling it mid-play, as well as changing sandbox options with little impact to the journal.

Update: The sandbox option for PagesReadPerMinute does not impact this mod anymore. (The mod has it's own sandbox options for reading/writing.)

Fix: Issue with recipes not being caught as unread.

Fix: There should no longer be issues with reading and mods that speed up actions. (The Quick-Worker trait from the mod More Traits.)

Fix: Add XP via admin menu works again.

Happy New Year.