Retention of attachments in workflow tasks

Hi,

The answer is yes, the attachment will be deleted if the cleanUp job delete the task.
However, there is several options :

• Copy the task attachment by using some actions in you workflow (this can be done with the sharepoint REST API). You can find an discussion here : https://community.nintex.com/t5/Nintex-for-Office-365/Copy-task-attachments-to-Master-Item-on-O365/m-p/88410 


• Copy the task attachment in a document library : Here an exemple : http://vadimtabakman.com/nintex-workflow-for-office-365-copy-attachments-to-document-library.aspx


• You can use an component workflow (with same previus logic ), and call this component after the task completion


• You can use Custom Javascript on your task form who upload the file not on the task but on your item (who generate the task). In this case you must not use the control "Attachments" on your task forms. You can have this solution explain here: https://community.nintex.com/t5/Community-Blogs/Add-attechment-to-item-on-Task-form-Nintex-O-365/ba-p/80698