Insert bend issues for parts created in older vers

I am still using SW2020 SP 5.0. I have sheet metal parts going back as far as 1998. Recently, I noticed that the bend notes for say 90-degree bends were missing on my drawing sheet even after I have checked the "Display Sheet metal bend notes" under Document Properties, Sheet Metal, Bend Notes option.
I noticed that older sheet metal parts I have created using the "Insert bend" in SW have only three