Using cosmological dressing rules, we uplift flat-space unitarity cuts to discontinuity relations for dS/EAdS observables. In this representation, Cutkosky delta functions map directly to "Disc" operations in the exchanged energy variable. This provides a transparent diagram by diagram origin of cosmological cutting rules. We illustrate this with explicit examples at tree level and one loop for conformally coupled scalars.
@article{arxiv.2601.08917,
title = {Cosmological Cutting Rules from Flat-Space Unitarity via Dressing},
author = {Arhum Ansari and Sachin Jain and Deep Mazumdar},
journal= {arXiv preprint arXiv:2601.08917},
year = {2026}
}