title: EWS recurring exception with removed attachemnt
body: <p>We use EWS to get meetings from Exchange and we faced with an issue connected with recurring exceptions. Scenario: we have recurrent meeting with attachments (attachments are attached to series, belong to master meeting). We change two occurrences: in first one we change subject, in second one we remove attachments. When we are trying to synchronize these meetings EWS get both of exception without attachments. First one should take attachments from master second one should not. However, we cannot find any difference between these two exceptions. How can we determine that in some exception attachment(s) was (were) removed? </p>