Unified to 㴱 U+3D31 or 𣵫 U+23D6B?

Based on the evidence, it is also the variant of 深.

See WS2017-02033.
[ {{WS2017-02033}} ]

Can more evidences be found?

㴱 in the phrase 志殷而㴱 from Chapter 72, Volume 10 of the Da Dai Li Ji 大戴禮記·卷十·文王官人第七十二is always written as ⿰氵⿱穴文, with an old annotation stating: “⿰氵⿱穴文 蓋深字.” As shown below, the Yuan, Ming, Qing, and Japanese engraved editions of the Da Dai Li Ji all present this character as ⿰氵⿱穴文.（p1~p5）
Qing dynasty scholars who collated the Da Dai Li Ji observed and discussed this phenomenon. For instance, Lu Wenchao, in his 與王懷祖（念孫）庶常論校正大戴禮記書, specifically emphasized that upon consulting dictionaries, there is no such character as ⿰氵⿱穴文. He suggested that if the main text were to be changed to 㴱, then since 㴱 is equivalent to 深, this annotation would not be necessary. Sun Yirang cited another scholar’s textual criticism, arguing that ⿰氵⿱穴文was a corrupted form of the character 㴱, possibly related to taboo names during Tang dynasty. （p6~p7）
Additionally, regarding the phrase 浚窮而能達” in Chapter 10 of the Da Dai Li Ji, Sun Yirang believed that the character 浚, which was annotated as 深, originated from a transformation of the glyph ⿰氵⿱穴文. （p8）
Modern collated editions generally retain the glyph ⿰氵⿱穴文 in the main text of the sentence志殷而㴱, while citing various scholarly opinions in their annotations.（p9）
（1）大戴禮記，嘉興路儒學元至正14年[1354]，刻本，35/46，http://read.nlc.cn/OutOpenBook/OpenObjectBook?aid=892&bid=95954.0
P1
(2)大戴禮記， 袁氏嘉趣堂明嘉靖12年[1533]
http://read.nlc.cn/OutOpenBook/OpenObjectBook?aid=892&bid=120855.0
P2
http://read.nlc.cn/OutOpenBook/OpenObjectBook?aid=892&bid=71511.0
P3
(3)大戴禮記，盧見曾清乾隆23年[1758]，刻本，118/159，http://read.nlc.cn/OutOpenBook/OpenObjectBook?aid=892&bid=153321.0
P4
(4)大戴禮記，戴德撰;淺見安正點，押小路通(京師):萬屋喜兵衛,正德6[1716]，https://archive.wul.waseda.ac.jp/kosho/ro12/ro12_02936/ro12_02936_0002/ro12_02936_0002_p0036.jpg
P5

(5)抱經堂文集 三十四卷,(清)盧文弨撰,上海 上海商務印書館 民國八至十一年[1919-1922],四部叢刊本
56/69， http://read.nlc.cn/OutOpenBook/OpenObjectBook?aid=016&bid=2939.0
P6
(6)大戴禮記斠補三卷，（清）孫詒讓撰，民國三年瑞安廣明印刷所石印本[1914]，24/82，29/82，https://db.wzlib.cn/digital_resource/web/viewer.html?file=/digital_document/file/wEEMfLQq4YP7o-oPhM5sKnDzk8FxQlfpiSWejlPICAnDoOPq_AfxG3Z0chjsc6eUsIGwkv8pJdf0WvxSAHHD8bXBRq20ELg-d1TFBJQxLhM%3D
P7
P8
P9