This is related to Copying items between lists while preserving attachments.
We have a complicated form approval process that goes through many people to get all the information needed. We are using Nintex forms to split up data entry, but along the way there could be many attachments. We need to grab the attachments from the task list and get them attached to the original list item so we can make these viewable to approvers later in the workflow.
Trying to come up with the copy webservice to copy files from one attachment folder in explorer to another. One of the copy methods requires the base 64 for the document and we do not have the means to get that. I am aware of Vadim's Happy Thanksgiving solution, but the powers that be are not allowing us to install that through our central admin without the base code.
The other methods error out stating that we are not pointing at an instance of an object.
If anyone has any ideas on how to copy the files from the task attachment folder to the list item attachment folder through a workflow, I would appreciate any input.