Improve saved deployments

apps/remix-ide/src/blockchain/blockchain.js

@@ -177,8 +177,12 @@ export class Blockchain extends Plugin {
         _paq.push(['trackEvent', 'blockchain', 'Deploy With Proxy', 'Proxy deployment failed: ' + error])
         return this.call('terminal', 'logHtml', log)
       }
-      if (networkInfo.name === 'VM') this.config.set('vm/proxy', address)
+      if (networkInfo.name === 'VM') {
-      else this.config.set(`${networkInfo.name}/${networkInfo.currentFork}/${networkInfo.id}/proxy`, address)
+        this.call('fileManager', 'exists', '.deploys', (error, exists) => {
+        this.config.set('vm/proxy', address)
+      } else {
+        this.config.set(`${networkInfo.name}/${networkInfo.currentFork}/${networkInfo.id}/proxy`, address)
+      }
       _paq.push(['trackEvent', 'blockchain', 'Deploy With Proxy', 'Proxy deployment successful'])
       this.call('udapp', 'addInstance', addressToString(address), implementationContractObject.abi, implementationContractObject.name)
     }