# 4608 Cached Updates Causing Error #1007 Errors when BLOB Columns are Edited

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In summary here is what I do:
    - set filter to the one record I want to edit (to reduce the size of the temp table)
    - BeginCachedUpdates on that table
    - call Edit on that table
    - ... take my time editing ...
    - call Post on that table
    - ApplyCachedUpdates (error will be provided if changes have occurred)
    - remove Filter

It had been working fine until it didn't.  In a particular table I kept getting errors "ElevateDB Error #1007 The row has been deleted since last cached for the table Product".  After researching further and guided by a recent bug fix I remembered about Cached Updates and memos, I focused there and this is what I have found.  It doesn't seem to matter if there are memo fields in the table or even in the edit until you edit a memo field as part of a cached update.  After that the error above keeps coming up regardless of whether the memo field is edited.