The one-time existence of a synoptic version of the *Śūraṃgamasamādhi-sūtra by Zhi Mindu, entitled He shoulengyanjing 合首楞嚴經, is evidenced by Zhi Mindu's own preface, which has been transmitted in CSZJJ.
[Lamotte 2003] Lamotte, Étienne, tr. Śūraṃgamasamādhisūtra: The Concentration of Heroic Progress – An Early Mahāyāna Buddhist Scripture. translated by Sara Boin-Webb. Delhi: Motilal Banarsidass, 2003.
— 85-90
Lamotte discusses records regarding the He shoulengyan jing, eight juan, 合首楞嚴經八卷, a synoptic version of the *Śūraṃgamasamādhi-sūtra compiled by Zhi Mindu 支愍度 in 301 CE in Chang’an 長安: This version combined parts of three Chinese translations of *Lokakṣema (revised by Zhi Qian), Dharmarakṣa and Zhu Shulan. Certain catalogues, T2034, T2153, mistakenly claimed that Zhi Mindu also collated the translation by Bai Yan in his work. This synoptic edition was also the object of a commentary in four juan by Xie Fu 謝敷 of Eastern Jin 東晉 [an interlinear note at the head of Zhi Mindu’s preface in CSZJJ reads: 三經謝敷合注共四卷, 49a17; Lamotte discusses this commentary separately, 90 – MR].