Collect small translation tasks from different projects in one single WS package

Hi WorldServer experts
As an LSP one is sometimes confronted with WS packages from some customers containing only a few tasks that in addition are very small. The project management can be time consuming when working with multiple tiny packages.

My questions are:
1. What mechanisms exist in WS to bundle such small tasks in one single WS package?
2. I know that in WS it is possible for the role project manager to move tasks to a new project manually and that there are some restrictions on doing this (e.g. the locale must be the same for all these tasks). Is this the appropriate preparation to export WS packages with more tasks in it?  
2.a. What are the consequences of moving tasks from one project to another? Will information get lost from the original projects? How is this presented to the original content submitter (the owner of the original projects)?

This is a lot of questions but I did not find sufficient answers in the forum. 
Thank you in advance

Victor