This is the way I understand it: Since the CP has no hard drive, when the compounds (or blocks) are deleted, they are gone. When they are then undeleted, in both the CP and the ICC, they are pulled from storage on the server (whether AW or AP). In this particular case, it was whatever was in place at the time of the last back-up. But, hey, the CP and ICC are synchronized. It's a little spooky when you can see blocks running on the Select page (we run Display Manager) and you can't delete them because they don't exist when you open the ICC. It happened to me while I was making live edits to the system. Actually, it was a full-scale reconfiguration of the control paradigm--which now included twelve sequence blocks per compound. (I know, I know... now.) The WP rebooted while I had the ICC open. I saved the compounds to a work volume, deleted the corrupt compounds, then restored them from the work volume. I suppose I could have tried the delete/undelete method, it didn't occur to me then. I remember feeling a little pressured at the time.... Chuck Jones Refinery Automation Technologist Tate & Lyle North America -- Lafayette South Plant 765.477.5324 - Office | 877.536.9219 - Pager -----Original Message----- From: D.B. Harris [mailto:hasinc@xxxxxxxxxxxxx] Sent: Thursday, April 10, 2003 4:41 PM To: foxboro@xxxxxxxxxxxxx Subject: Re: [foxboro] Control Blocks missing in ICC Configuration Can someone explain to me what a Delete/Undelete actually does? TIA Sincerely, Diane B. Harris Harris Automation Services, Inc P.O. Box 890472 Houston, Texas 77289 <http://www.HarrisAS.com> * 281-804-3675 * 281-286-6996 * hasinc@xxxxxxxxxxxxx ***************************************************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the email to the intended recipient, be advised that you have received this email in error that any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. If you have received this email in error please notify the sender immediately. Please note that we reserve the right to monitor and read any emails sent and received by the Company in accordance with and to the extent permitted by applicable legal rules. ***************************************************************************************************** _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: http://www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave