I switch my address between Germany and the US back and forth rather whimsically, depending on where I am flying from more often. The not logging in thing to get the proper local pricing is irritating.

At the moment I am registered as in Germany. I am in the first year of the two years of the SEN requalification period. I will reach 100 k this year, but probably not the 130 k.

From today's perspective I will mostly be booking ex-Germany until the beginning of 2011.

What is the best strategy to ensure that I qualify this year for SEN-extension?

Do I wait until the end of 2011 to make the address change?

I am not sure about when LH computes the extension.