How about this --
http://www.ukba.homeoffice.gov.uk/visas ... /earnings/
Which clearly says -
"Table 2A of Appendix A (Attributes) of the Immigration Rules lists countries and the appropriate conversion rate, which you can find on the right of this page.
The country in which you have been working, rather than your nationality, determines the income bands against which we will assess the earnings.
Where you have earnings from more than one country, the points-based calculator will apply the appropriate uplift ratio for each country in which the relevant earnings were made, to provide a total that is equivalent to the UK value of earnings."
it also says -
" If you are already in the UK under Tier 1 (General) and you are applying to extend your stay, you cannot claim uplift rations on any overseas earnings."
i think which means if you are physically present in the country for which your salary is, then appropriate uplift ratio can be applied. But if you are in UK and claiming an overseas earning then it cannot.
Also none of the statement of changes says anything about change/mod of uplift ratio.
http://www.ukba.homeoffice.gov.uk/sitec ... ofchanges/