M2E Pro is developed to work based on core Magento functionality, meaning the Module correctly identifies all of the product updates made through Magento interface and synchronizes them on the Channel accordingly. In case 3rd party modules are used to update such information as Product Quantity, Price, status, etc. in Magento, then programmatic adjustments are required to ensure that the product updates are caught by M2E Pro.
Magmi Import Tool provides product changes via direct SQL injections (i.e. not through the standard Magento functionality). So, M2E Pro needs a notification about modified data to reflect it correctly.
Therefore, if you are using Magmi Tool, you have to set up M2E Pro Plug-in for Magmi Import Tool.
Steps to proceed:
If M2E Pro Plug-in is installed and works properly, Magmi extension will keep a log of product updates. You will notice a message similar to the one below:
plugin;M2eProChangesCatcher;std:Ess M2ePro Product Changes Inspector v1.0.8- Will be checked 15677 products.plugin;M2eProChangesCatcher;std:Ess M2ePro Product Changes Inspector v1.0.8- Not presented (skipped): 15664 ## Existed (skipped): 0 ## Processed: 13.
Also, after the Products are updated using Magmi Tool, the table 'm2epro_product_change' must contain appropriate records about these Product changes.