Further Faster review for Cin7 Omni

Hi we are new to Cin7, using it only for a few weeks now. We have experienced lots of problems in a very short time. We have it connected to Shopify. We have found that Cin7 has been deleting variants from shopify. The whole product doesn't disappear but say out of 16 size and colour variants all but one will be deleted. We've also found a few products in shopify where just the image is missing now. Is anyone else experiencing these issues?