WHMCS 8.13.1 - import from Blesta 5.11.5

[leandrogbreve]

I've been struggling to import data from Blesta 5.11.5 to WHMCS 8.13.1 and it keeps getting stuck in "products & services" step.

It seemed that it forced WHMCS to call an outdated class/package, here is related log:

Class "Doctrine\DBAL\Driver\PDOMySql\Driver" not found in /home/xxx/public_html/vendor/illuminate/database/MySqlConnection.php:64 

Stack trace: 
#0 /home/xxx/public_html/vendor/illuminate/database/Connection.php(894): Illuminate\Database\MySqlConnection->getDoctrineDriver() 
#1 /home/xxx/public_html/modules/addons/import_assist/lib/ImportAssist/Source/Blesta5/Entity/Product.php(0): Illuminate\Database\Connection->getDoctrineSchemaManager()
(...)

=== update ===

I managed to make it work by creating DBAL package via composer locally on my machine and uploading to a folder 'vendor_dbal' inside import_assist/ and created a hook to tell WHMCS to load that folder as well. 
 

[leandrogbreve]

I've found out that the import was "successful", but extremely poor execution. 

Hosting services were imported only with product name and due date, missed relevant data as domain, username, price, etc). 
Domains were imported as product/service, not as domain. 

A very bad execution which messed up database. Not recommended.