Taxonomy manager lite

Taxonomy manager lite is a simple module that enables the easy management of taxonomy terms based on vocabulary and terms. You can re-assign terms as well as delete un-assigned terms easily using this module.

This module has two main features:

1. Assign Taxonomy Terms: You can list the nodes with taxonomy term(s) by selecting the term(s) from "Current Terms". Depending on whether or not you check the "Show nodes with any term instead of all terms" checkbox, nodes will be displayed with either both or one of the terms. You can then add these terms to the node or replace other terms from the "New Terms" drop down.
2. Clean Taxonomy Terms: You can clean the unassigned terms from the taxonomy list with a single click. In admin/utilities/taxonomy/assign-terms, select the taxonomy(multiple) to be replaced. Click on 'Preview' to see the nodes having the taxonomy. Select the new taxonomy (multiple) to
   replace the above one and assign.
   In admin/utilities/taxonomy/delete-empty-terms, remove the unassigned taxonomies in a single click.

Features:

1. Clean unassigned terms in a vocabulary in one click
2. Union and intersect operations to list terms.
3. Add or replace operations for listed terms.
4. Preview of node list with taxonomy terms.
5. Can update term name from Preview.
6. Filter using all vocabularies available in the system.