Hi @casbboy ,
I would like to inform you that we didn't enter your site as yesterday was holyday here and didn't have time to do that. So if something happened to your site, was due to your changes and not to us...
Regarding managing the stock at variable level: this is totally incompatible with Multi-Inventory. You can not manage the stock for distinct variations' inventories if the stock is managed by their parent and not at variation level. Makes no sense and I advise you, pls, read the WooCommerce documentation.
Anyway, if you set the "Manage Stock" at variable level on as you said and enable the Multi-Inventory for all the variations and remembering to enable the "Manage Stock" at inventory level for at least one of them with stock, the variable "Manage Stock" won't be used at all by Multi-Inventory, as this add-on only takes care of the inner inventories and not to the WC stock settings.
Please, learn how WooCommerce, ATUM and Multi-Inventory work before creating panic about bugs that are no bugs at all. You have a lot of documentation here at the forums and in our Youtube channel.
And related to your original Inventory Logs issue, we'll continue discussing this on Ticksy, as this seems something specific for your configuration and not a general bug.
Hope this helps.
Best Regards,
Salva.