Text formatted in a graph, as
https://helpx.adobe.com/illustrator/desktop/automate-visualize-data/visualize-data/format-the-text-in-graphs.html
describes (the whole graph with the Selection tool, or labels picked
with Group Selection, through the Character and Appearance controls),
now survives the graph being drawn again from its data.
- A graph keeps a character style per kind of label: value axis
numbers, category labels (category axis, radar spokes, pie names)
and legend labels (beside or across the top, or in wedges).
- text.setStyle, text.setFormat and fill/stroke changes on a graph's
labels apply the same change to their kind's kept style, so only what
the user changed is kept and every label of that kind follows. A
change to part of a label's text isn't kept.
- Labels are told apart by where the graph draws them, not by their
text, so a category named "2" and the value axis' 2 stay apart.
- Label spacing follows a kept size (legend rows, offsets from the axes
and wedges), so bigger labels don't overlap; at 9 pt it's as before.
Wedge labels stay white on dark wedges unless given a colour.
- A kept style from a file is held to the Character controls' limits.
Own choice, as the page doesn't say what happens on a data change:
formatting one label formats its whole kind, since the labels are drawn
again from the data. Other ways of restyling text (eyedropper,
character styles, Find Font) aren't kept yet. New fields are written
only when set; graphs without kept formatting draw the same art as
before.