how to mvexpand a 3 node level xml or merge it with xpath or spath ?

[sbsbb]

I have xml with 3 level

level1 Property1
EventType1
Element1
Element2

EventType2
Element3
Element4

level1 Property2
EventType1
Element5
Element6

EventType2
Element7
Element8

I would like to have everything flat like :
Level1 Property1 EventType1 Element1 (... with all fields from Element1)
Level1 Property1 EventType1 Element2...
Level1 Property1 EventType2 Element3...
Level1 Property1 EventType2 Element4...
Level1 Property2 EventType1 Element5...

I tried to make an spath with Level1 as path, and then a | mvexpand
But in fact I have to make a double expand for each eventtype, or make somekind of union ?

(fields in the Elements itself are similar in Event1 and 2)

I'm lost !

[sbsbb]

At the moment I've a workaround by doing an append

search.... spath... [ append search spath ]

It works, but it is not really performant.

[eashwar]

did you have a solution for this brother, please let me know