I have a mashup map on my home page, and noticed that a marker that was there, is suddenly gone. So I made a list of the 19 posts, and started checking to see if they had a marker on the mashup. There were two that did not, so I deleted and re-entered the posts, and the markers are now there, but markers I had confirmed just minutes earlier, are now gone. I will be adding more than 300 posts with markers, and cannot afford to check and recheck to make sure the markers appear (and stay) again and again. HELP!