https://www.aras.com/community/f/development/3586/purge-and-floatHi, I create Itemtype A and B , both are version controlled and A has B as an item property defined as float. I create an instance of both and relate instance B to instance A . I modify both multiple times so they both go up several generations. Whenja-JPTelligent Community 12https://www.aras.com/community/thread/1443?ContentTypeID=1Fri, 16 Mar 2018 16:11:48 GMT916d3f7e-8ddc-42f8-8d45-380822f51406:fd1af92d-c3ef-4a5d-8fcd-af0e68ac412dChristopher GillisHi Majorbyte, There are a few different options here. I believe you could instead define the Item property to be fixed. With a Fixed behavior, each version of A will maintain a reference to a specific version of B. Doing this, when you purge instance A back to a previous generation, it will no longer be referencing the latest generation of B. It will be referencing the same generation of B that it did when the new version of A was created. An alternative solution would be to add an onBefore server event to ItemType B that updates any references to the latest generation of B to the previous generation. I believe you would want to use an onBeforeDelete server event and add a check to make sure that the action is purge using code like. <pre><code>string action = this.getAction(); if (action == &quot;purge&quot;) { // Update references to previous generation }</code></pre> Chris <hr /> Christopher Gillis Aras Labs Software Engineer<div style="clear:both;"></div>