I can't find anything that points to anything really! I haven't been supplied the logo in question as a separate Illustrator file.
My research suggests that they have copied the vector lines directly from Illustrator and pasted them onto the page, which then embeds them into the ID artwork which means should that logo change at any time, you have to change it every single time it appears on a page - or do what should have been done in the first place and just generate the different versions you need in Illustrator and import it onto the artwork the correct way.
I found a fairly old thread from 2007, and if this is the way it has been done, quite a few seem to think this is good practice because "it means you don't have to switch in and out of ID to Illustrator when the logo needs changing". Incredible! How hard is it to switch to Illustrator, make your amend (which can then be universal) or different colour version, save and import?
What if the ID document becomes corrupt and the only place you have that logo is embedded in the now corrupt artwork? Seems bad practice to me.
Of course, if I am missing something here, I take all of that back, but thanks tombolt. I hope you are well and good btw!