Variations parent and child problem

Hi to everyone!

I’ve a problem and I can’t resolve it with Attributes and Variations in Variable product on Woocommerce.

In Products->Attributes I created ATTRIBUTE 1 and ATTRIBUTE 2. In Configure terms I added terms like following:

ATTRIBUTE 1
• Variant A
• Variant B
• Variant C
• Variant D

ATTRIBUTE 2
• Variant 1
• Variant 2
• Variant 3
• Variant 4

I added a new ‘Variable product’. In ‘Attribute’ added ATTRIBUTE 1 and ATTRIBUTE 2
Then in ‘Variations’ I create variation by ‘Add variation’ and not by ‘Create variations from all attributes’. So I create variations one by one.
In this case all work perfectly because ATTRIBUTE 1 have Variant A-B-C-D and ATTRIBUTE 2 have Variants 1-2-3-4.

After update to Woocommerce 2.4.12 ATTRIBUTE 1 have variant of ATTRIBUTE 1 and ATTRIBUTE 2. The same thing for ATTRIBUTE 2.
Following the results:

ATTRIBUTE 1
• Variant A
• Variant B
• Variant C
• Variant D
• Variant 1
• Variant 2
• Variant 3
• Variant 4

ATTRIBUTE 2
• Variant A
• Variant B
• Variant C
• Variant D
• Variant 1
• Variant 2
• Variant 3
• Variant 4

For one variable product I’ve about 180 variants. If every Woocommerce update I will give this results is a big problem for me…….I need about 3 days to reconfigure all variants with price, weight, stock, size and so on.

If someone with same problem can help me I appreciate it a lot.

WordPress 4.4 and Woocommerce 2.4.12

Thanks and have a nice day,
Daniele

https://wordpress.org/plugins/woocommerce/