Removing an attribute

Hi,<br><br>I have created a NOIDMIF file an example is shown below. It adds in a new class and is viewable in Resource Explorer which is just what I want. <br>However in the future this NOIDMIF file may change and things will needed to be added to it and removed. <br><br>The adding is no problem just add in another attribute and it adds another column within Resource Explorer and the SQL Tables. <br>However, If I remove an attribute for example 'SysLocationBusiness' it removes the value out of the Resource Explorer but it still leaves <br>the column within Resource Explorer with no value and it also leave a column with the table in SQL.<br><br>As you can imagine this is not very tidy. I am desperately looking for away to successfully cleanup.<br><br>Example if NOIDMIF........<br><br>Start Component<br>Name = &quot;Machine&quot;<br>Start Group<br>Name = &quot;Test_NOIDMIF&quot;<br>ID = 1<br>Class = &quot;CompanyX¦NOIDMIF¦1.0&quot;<br>Start Attribute<br>Name = &quot;SysLocationSite&quot;<br>ID = 1<br>Type = String(60)<br>Storage = Specific<br>Value = &quot;Bognor&quot;<br>End Attribute<br>Start Attribute<br>Name = &quot;SysLocationBusiness&quot;<br>ID = 2<br>Type = String(60)<br>Storage = Specific<br>Value = &quot;Administration&quot;<br>End Attribute <br>End Group<br>End Component&nbsp;&nbsp;<br>