Part of Creative Cloud is a feature call simple save back. You should be able to open the CC2015 file in CC as long as you’re on line.
Yes, Bob, it's worth a try using Simple Save Back Service.
@Cath – copy the "original" InDesign document from CC-2015 to the computer at work.
Then try to open it with InDesign CC v9.3. (I think you need an update of your CC v9 from 9.2 to 9.3 to make that work).
With v9.3 the Simple Save Back Service should kick in.
Just like that (German interface example):
The initial message:
The conversion process:
Depending on your connection's upload and download speed (and the size and complexity of your document and server workload on Adobe's side) this could take a while (minutes maybe…)
I'll see if our IT department will allow me to make the upgrade. Not likely. I work in a bureaucracy. I WILL try, though! Again, thanks.
I also realize we probably don't have access to the Simple Save via our network. I bet it's blocked. (They want to control my computer at work COMPLETELY.) Sigh. Thanks.
If a miracle appears I'll update my comments.
What I do not understand is why you at home are not using InDesign CC v9.3. Obviously you are using the cloud, so you are able to install older versions of the cloud as well: CS6.v8.1, CC v9.3 and CC-2014.2.