Hi Mark, Concerning the 'reason' attribute I like the idea. I mean we could add it to the proposal suggesting that the phase-name attribute will be removed from <trans-unit> and <bin-unit> elements. On the other hand I don't think adding the phase-name attribute to the <alt-trans> element would help. There can be more than one <target> element inside the <alt-trans> and you could use just one phase-name attibute in the <alt-trans> element . Unfortunately you can't cover all the targets by only one attribute in the parent <alt-trans> element. By my opinion the first case you adduced - when (i.e. which phase) a particular <target> was introduced to the XLIFF document - is much more important for tracking the localization process. For the second case - if you know the order of the phases you can sort <target> elements placed in the <alt-trans> and then it should be possible to find when the particular <target> element was moved from <trans-unit> element to the <alt-trans> element. Best regards, Mirek