The evidence image, which is simply a code chart excerpt, is insufficient. While the link to the CNS 11643 website is better, it also is insufficient. A dictionary entry or book excerpt that explains its meaning or shows the ideograph in context is desirable.

Agree with comment by Ken Lunde.

IRGN2486 (TCA's submission for WS2021) indicates that the evidence image is from the household service database, from which the name on each person's ID card is printed. It is not simply a code chart; it is an official government document with legal effect. For further explanation, please see IRGN2546.

According to Taiwan MOE, this is a variant of 篡 (U+7BE1)
https://dict.variants.moe.edu.tw/variants/rbt/word_attribute.rbt?quote_code=QTAzMDI5

unify to 𮐋 (U+2E40B)?

As Lee’s comment, the submitted character is the variant of 篡/簒. U+2E40B 𮐋 is submitted by ROK. If ROK can confirm the meaning, we will be easy to confirm how to handle this character.

According to Taiwan MOE, this is actually a variant of 篡 (U+7BE1). If unified, need to add a new UCV rule.