<p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">There are several questions and respective answers for how to make a multipart features Layer into a singlepart features one using QGIS:</span></p><ul style="margin:0px 0px 1em 30px;padding:0px;border:0px;font-size:14px;vertical-align:baseline;list-style-position:initial;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<li style="margin:0px 0px 7px;padding:0px;border:0px;vertical-align:baseline;line-height:16px;word-wrap:break-word"><a href="http://gis.stackexchange.com/questions/27825/how-to-break-a-single-polygon-into-multiple-polys" style="margin:0px;padding:0px;border:0px;vertical-align:baseline;text-decoration:initial;color:rgb(53,141,170);background-color:rgb(255,255,255)">How to break a single polygon into multiple polys?</a></li>
<li style="margin:0px 0px 7px;padding:0px;border:0px;vertical-align:baseline;line-height:16px;word-wrap:break-word"><a href="http://gis.stackexchange.com/questions/23377/how-to-split-non-contiguous-feature-in-qgis" style="margin:0px;padding:0px;border:0px;vertical-align:baseline;text-decoration:initial;color:rgb(53,141,170);background-color:rgb(255,255,255)">How to split non-contiguous feature in QGIS?</a></li>
</ul><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">But all the solutions I saw, creates a entirely new layer and would transform ALL the multipart geometries into single ones.</span></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">So the questions is, how could one, during an edit session, <strong style="margin:0px;padding:0px;border:0px;vertical-align:baseline">selectively</strong> transform a multipart feature into a singlepart feature, without the need to create a new layer?</span></p>
<p style="margin:0px 0px 1em;padding:0px;border:0px;vertical-align:baseline;clear:both;word-wrap:break-word"><span style="background-color:rgb(255,255,255)"><font color="#333333" face="Helvetica Neue, Helvetica, Arial, sans-serif"><span style="font-size:14px;line-height:18px">I saw a </span></font><a href="http://trac.osgeo.org/qgis/ticket/3278" style="color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:14px;line-height:18px">ticket</a><font color="#333333" face="Helvetica Neue, Helvetica, Arial, sans-serif"><span style="font-size:14px;line-height:18px"> for this but it seems to have been misunderstood.</span></font></span></p>
<p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">It would be the opposite to the "merge selected features" tool, and similar to <a href="http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Merging_and_separating_features" rel="nofollow" style="margin:0px;padding:0px;border:0px;vertical-align:baseline;text-decoration:initial;color:rgb(53,141,170)">explode</a> in ArcGIS.</span></p>
<p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">Is there any plugin doing this? How could this be done using the python console?</span></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)"><br></span></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">Alexandre Neto</span></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)"><br></span></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:14px;vertical-align:baseline;clear:both;word-wrap:break-word;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:18px">
<span style="background-color:rgb(255,255,255)">PS: I have posted the </span><a href="http://gis.stackexchange.com/questions/44799/how-to-transform-a-selected-multipart-feature-into-singlepart-features-during-a">same question</a><span style="background-color:rgb(255,255,255)"> in <a href="http://gis.stackexchange.com">gis.stackexchange.com</a> In case anyone wants to answer there.</span></p>