Missing G1 albums during import.

Hello everyone,
I am trying to import G1 albums into my new G2 environment (the links are listed below) but some of the albums are missing from the g2 module when I run the import utility. The albums that do not get to import are "London Pictures" and "London Events" .I could re-upload these by hand but I am having the same problem with another website set up for a friend of mine.

Anyone else experienced and resolved the same issue I am having with the import module?

I tried many things but none of them worked.

Thanks in advance to everyone for your help!

PS yes, I followed all of the pre-import procedures listed on the migration documentation.

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G2 URL (optional): http://www.mauroclerici.com/galleryguests2/mauroandbahija/main.php
G2 version: 2.1 full
G1 URL (optional): http://www.mauroandbahija.com
G1 version: 1.5.3

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Gallery version = 2.1.1 core 1.1.0.1
PHP version = 4.3.1 apache
Webserver = Apache/1.3.27 (Win32) PHP/4.3.1
Database = mysql 4.0.12-nt, lock.system=flock
Toolkits = Exif, NetPBM, ImageMagick, SquareThumb, Thumbnail
Acceleration = none, none
Operating system = Windows NT localhost 5.0 build 2195
Default theme = carbon
Locale = en_US
Browser = Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3