No need to thank me. There's a lot of insight to be gained from those things. At least there is as I add them, because I have to look them up to see if the title is already in the database, etc., and while I'm doing all that I get a more comprehensive picture of where the poems ended up (e.g., many of the '72, '73 poems are in What Matters Most, things like that), and a feel for the period. 1973, where I am now, is a good year to work on because Bukowski moved in with Linda for 6 months, then to a depressing apartment for a short time, and that transition is right there in the poems. I guess what I'm saying is doing this forces me to spend more time with each manuscript than I do when just reading through them, so it's a good thing, not a chore.
The only drag is that when I add a manuscript that has been collected I usually end up reading the collected version along with the manuscript, and more and more often that just depresses me.