Need help finding where a broken trace leads to -- Amiga 1000 daughterboard

[Hook]

I need to repair a broken trace off a non-working Amiga 1000 daughterboard, specifically the one that goes to pin 19 on U6J.


I don't have a pic handy, so I took one from EzdineG's tutorial on installing a Kickstart adaptor. This is the trace I need to fix:

I've tried figuring out where it leads to, but have not succeeded.


Any help would be appreciated!