@David B The way you are doing it is unfortunately the only way. You could have a field setup for previous item though and have it as list record of item then select the previous item so that it would be easier to find it later.

Thanks @karlenigma, thought that may be the case. And yeah, I've got a custom list/record field for reference, good suggestion. If I find time to (and manage to) develop an elegant solution for this I'll be sure to share