Today I was able to make a proof of concept for one of the missing features in ION Work Flows - the ability to copy the entire WF attachments to IDM.
This solution is using Workflow Exit Point that queries the SQL table Infor_xxx_Mingle.dbo.MingleAttachment with the Workflow ID, and for each record found it uploads the file to IDM (using icp jar).
Here is an example:
1. Starting WF with input CUNO, and some attachments
2. The Exit Point in the WF adds the attachments to IDM:
3. IDM attributes can be controlled in WF variables, like CUNO (id2). id3 is the WorkFlow ID, etc...
(done on IOS 12.0.30)