Thanks for your question. There are a couple of ways to approach this depending on what you want to achieve.
If you just want to change the captions displayed in an [mla_gallery] shortcode, you can do that without actually changing the caption/excerpt values in the database. Try adding mla_caption="{+title+}" to your [mla_gallery] shortcode.
If you want to make the change in the database, you can define a mapping rule for it. Navigate to the Settings/Media Linrary Assistant IPTC/EXIF tab, find the “EXIF/Template Value” text box for the Caption field and enter template:([+post_title+]). That will copy the Title into the Caption. If you select Existing Text “Keep” you can avoid changing the items that already have a Caption value.
If you check the “Enable IPTC/EXIF Mapping when adding new media” box at the top of the screen you can automatically apply the rule(s) as you add new items to the Media Library.
Don’t forget to scroll to the bottom of the page and click “Save Changes” to make your rule permanent.
I hope that gives you some alternatives to getting the Captions you want. I am marking this topic resolved, but please update it if you have any problems or further questions regarding my suggestions.
