Date/time in LR 2.1 -- still not what I expect

Question

Date/time of images that I scanned and input the dates outside of Lightroom are now working better, but still not what I would call correct. If I use the Library Filter, the date selection is correct under "Date".
This is the date that Lightroom calls "Date Time Original" in the metadata panel available on the right side. But when I select a folder and ask LR to sort based on "Capture Time", it sorts on what it calls "Date Time" not what it calls "Date Time Original". What I put in Date Time is the scan date, usually called the "Date Time Digitized". (I care when they are digitized because that indicates the quality of the scanner.) This shows up as "Date Time" in the metadata panel.
So why is the metadata search based on "Date Time Original" and the sorting by "Date Time Digitized". Surely most people want a sort on "Date Time Original" (which is the same as LR's "Date Time" in a digital camera) not some other date. If they think some people really want the other date, then it should be a choice under sort.
The sort field is called "Capture Time". OK, I agree, I did scan the files on that date. So in that sense it is the "capture time" but MY opinion is I "captured" them on film on the "Date Time Original" date and that is always the date I want them sorted by. The other date is just for reference in my case.
If "Capture Time" is really what the designers of LR think I want, why is that not the date in the library filter?
Judy

Answer 1

Holy macaroni! I think I got it right this time. But from now on I'm using Integer.toBinaryString(int) ...or my own special brand of sluggish code he he. Thanks for the input though. Really appreciate it.
   public String toBinary(int innTall) { // i.e 123
        while(innTall > 0) {
            rest = innTall%2;
            innTall = innTall / 2; //i.e 61-30-15-7-3-1-0
            if(rest > 0)
                tall = 1;
            else
                tall = 0;
            result = result.concat(result.valueOf(tall));
        return (reverse(result));//returnerer den omvendte rekkef�lgen av bin�rtall
    //internal method for flipping a string of binary numers
    private String reverse(String sekvens) {
        char tegn[] = new char[sekvens.length()];
        while (sekvens.length() != index ) {
            tegn[index] = sekvens.charAt((sekvens.length()-1) - index);
            System.out.println(tegn[index]);
            index++;
        index = 0; //reset index
        String newString = new String(tegn);
        return newString; //toString er synderen
}