Bug + Regression in products sons editing within parent product

[SteP[IT]]

-- REGRESSIONS
Adding a new product son and then editing it leads to those problems:
1) son sef alias is no more changed when changing the son name
2) son currency is no more set to the parent product one
...to fix it you must edit each son separately, manual assigning the correct value!

-- BUG
1) when adding more sons before editing I get them this error:

Code Select Expand

vmError: Database error: createChild Duplicate entry 'ideal-secure7308' for key 'slug' SQL=INSERT INTO `j25toolware_virtuemart_products_en_gb` (`virtuemart_product_id`,`slug`) VALUES ("736","ideal-secure7308");

in my case I have added 4 products with no erros, but when adding a 5th one vm tries to give it an already assigned name (in my case 'ideal-secure7308' was previously automatically assigned to another son) and I get the error above.