I've set InDesign preferences for the Default Relink Folder to 'look in original folder'.
But when I open a document with missing links and click the 'relink' icon on the bottom of the links panel it just defaults to the last folder I looked in.
Also, if I use the 'relink to folder' option in the link panel's menu, is there a way to get it to search the folder for other missing links automatically?
Original file location only works when ID knows where that is. If the link is missing, ID doesn't know.
If the files in the folder have the same name as the ones currently linked, the relink to folder command should work on multiple selected links.
Shift select the images in the link panel and then choose 'relink to folder". It'll find them all if they are available in that folder.