Empty Index Cards

Hi all,
first time posting here so thanks in advance for any assistance.
My novel is split into chapters within the Draft yet when I go to Index Card view I find only a few of my cards contain text.
Naturally, I’d like them all to contain my words.
Can you help?

Hi Jevon,

Have you written anything in those synopses yet? Remember that index cards aren’t intended to show the text of the main document but rather a synopsis that you type in to remind you of what is, or what should be, in the main text.

All the best,