I have a simple product (SP) with 3 drop-down custom options with each having about 100 options. This simple product is associated to a configurable product (CP).
After importing these products using MAGMI, I noticed that I couldn't modify the custom options on the SPs from the admin. I found out that
max_input_vars in PHP limits the number of variables being saved, so I increased that, and the custom options were once again editable in the Magento admin.
Now, I find another peculiar behavior. This SP won't show under the associated tab of the CP, apparently, because of the large number of custom options. The association is available in
catalog_product_super_attribute, and when I remove all of the custom options from this SP, it shows up again in the associated tab of the CP.
Does anybody had to fix an issue like this? I am using Magento EE 1.13.