HTML code will have to be added manually in Magento. Lightspeed pushes these fields as blocks of text. As Lightspeed is the master source of information it will overwrite data entered into Magento if the description being updated with HTML is turned on.
To turn off updating of the web description through the Connector you will need to perform the following steps:
- Login to accumula.com and go to Apps>Shopify/Magento
- Set Description (Long Web Description) to off