If you have saved customized text styles to the text styles library file, you can import the text styles into your catalog text styles library or any project-specific text styles library.
To import text styles from a text styles library file:
Open the project you want to import text styles into.
Access the text styles library. How to
In the Text Styles dialog, click Transfer.
In the Open dialog, select the Textstyles.tsl file (or whatever file you want to import text styles from), then click Open.
In the right pane of the Transfer dialog, select the custom text style you want to import, then click Import Item. Or, to import the entire list, just click Import All. The list in the left pane is updated.
Click OK.