the miracle range is documented in Pj1980's excel spreadsheet (https://gbatemp.net/threads/smtv-vengeance-save-editor.657461/#post-10445209), it's just 07 for an activated miracle and 02 for a buyable miracle as PJ has written. on new game plus, though to activate the route exclusive miracles I had to set it to 07 as with 02 (buyable) they don't show up on my character. it can also be compared with this save file which is a mega done save file https://bai-gaming.com/shin-megami-tensei-v-vengeance-completed-save-file/
for example I added the route specific miracles by pic related (the modified values are the red numbers) though I bet two of those 07s aren't actually needed as I just mass guessed some numbers.![frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
for example I added the route specific miracles by pic related (the modified values are the red numbers) though I bet two of those 07s aren't actually needed as I just mass guessed some numbers.