I dont see how she is starting from scratch. We have quite a few other skaters of comparable level who moved to Orser
Yuna: moved in March 2007. In 2006-07 season, she was scoring 168 - 186 or so. In 2007-08 season, she scored 180 - 197. There was no "1.5 year", she improved straight away.
Hanyu: moved in April 2012. In 2011-12 season, he was scoring 226-251 or so. In 2012-13 season, 243-264. Again, there was no "1.5 year", Hanyu improved his results straight away.
Well, Javi was not a top skater but he is being brought as example so:
Fernandez: moved in June 2011. In 2010-11, he was scoring 184-218. In 2011-12, he was scoring 204-250. Fernandez also improved straight away.
This is also why people expected better results from Zhenya - the top skaters who went to Orser so far didnt lose their ground at first, despite different coaching system and whatever. Is Zhenya only one reworking stuff? Everybody else came in entirely ready and had nothing to rework? Weren't people bringing Hanyu as an example of reworked jump technique before? Didn't Orser actually say he would use with Zhenya what he learned while coaching Yuna, who came to him imjured?