Incidentally, Chandrabhal Tripathi's introduction to his catalogue of the Jaina MSS in Strasbourg discusses these many-to-one and one-to-many problems well, as presented by manuscripts. His introduction is worthy of being treated as a good primer on manuscript studies in general.
Best wishes,
Dominik Wujastyk
Tripāṭhī, Chandrabhāl. Catalogue of the Jaina
Manuscripts at Strasbourg. Indologia Berolinensis ; Bd. 4.
Indologia Berolinensis ; Bd. 4. Leiden: E. J. Brill, 1975
Originally presented as the authorś thesis, Freie Universität, Berlin.