Personal Injury Trust - and migration from ESA to UC

Hi there

I am in the ESA Support Group and have received the migration notice to UC. Regarding the section about 'potentially disregarded' finances, I have ticked "compensation payment" - however the form does not ask if this is in a Personal Injury Trust (which it is and so should definitely be disregarded.) I told the DWP/ESA about the Personal Injury Trust 5 years ago - and my benefits continued fine. Is there anywhere I can explain and provide the Trust reference number on this migration form? . . . I have heard talk about adding notes at the end, for various things - maybe in the "journal"? But I can't see where I can do this yet, as I have not "submitted" the form. Also, wondering if anyone knows whether UC would simply cross-reference this type of thing with my records that are already on file with ESA/DWP - and so will already know that the compensation payment is in a trust fund? . . . Any illumination gratefully received. Thanks!