Stumbled upon this tonight.
Apparently Citrix RightSignature now allows a signer to save progress on a document and later pick back up where they left off by clicking the link in their email again. No eblasts notified me of this new feature (that I can remember).
Major pain point has been lifted off my shoulders. After doing a quick test, I believe I'm going to implement my 2020 individual tax returns organizers through this platform now (a little behind this year on those).
Just an FYI out to those who may also use RightSignature.