Upgrade does not work on 1.4 repository

[Fausto Carvalho Marques SIlva]

I have a 1.4 repository with 9000 revisions and a size of 1GB, i want to 
use the "merge reintegrate" option, so i have to upgrade the repository 
to the new layout. When i do a dump and a load the reintegrate works 
fine, but when i do a "svnadmin upgrade" the reintegrate does not work, 
it keeps  generating so many conflicts that does not occur when dumping 
and loading the repository. Can someone help me!

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Fausto Carvalho Marques Silva