PUA (BMP) planned characters HTML tables

[James Kass via Unicode]

On 2019-08-14 7:50 PM, Richard Wordingham via Unicode wrote:
> I think you'd also have to change the reference glyph of LATIN LOWER
> CASE I WITH HEART to show a heart.  That's valid because the UCD trumps
> the code charts, and and no Unicode-compliant process may deliberately
> render <i, COMBINING HEART> differently from LATIN LOWER CASE I WITH
> HEART.

U+0149 has a compatibility decomposition.  It has been deprecated and is 
not rendered identically on my system.
'n ʼn
( ’n )
If a character gets deprecated, can its decomposition type be changed 
from canonical to compatibility?