diff --git a/src/App.svelte b/src/App.svelte
index a60e09b..e771027 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -73,6 +73,63 @@
 		window.sheetOne = sheetOne
 	}
 
+	/**
+	 * Refresh sheet
+	 *
+	 * Destroys the current sheet, but saves the data first so if
+	 * there are any columns in the new sheet that matches the old
+	 * ones, it'll add them back. (Columns meaning TKs, of course)
+	 */
+
+	function refreshSheet() {
+		let oldData = sheetOne.getData()
+		let oldColumns = sheetOne.columns.map(c => c.label)
+
+		sheetOne.destroy()
+
+		// now, make it up again with the new TKs
+		showSheet()
+
+		// figure out the new data
+		let newData = []
+		let tkOrder = []
+
+		// first, we figure out how the old column order corresponds to
+		// the new one
+
+		for (let col of sheetOne.columns.map(c => c.label)) {
+			tkOrder.push(oldColumns.indexOf(col))
+		}
+
+		// now we fill this, row by row
+		for (let oldRow of oldData) {
+
+			// skip empty rows
+			if (oldRow.every(v => !v)) continue
+
+			// now, we figure out what to put for the new row
+			let newRow = []
+			for (let tkIndex of tkOrder) {
+				if (tkIndex <= -1) {
+					// new TK; leave it blank
+					newRow.push('')
+				} else {
+					// old TK; keep it filled!
+					newRow.push(oldRow[tkIndex])
+				}
+			}
+
+			// and finally, when all is done, we save it.
+			newData.push(newRow)
+		}
+
+		// fill it with the new data
+		sheetOne.setData(newData)
+
+		// don't forget to refresh the preview!
+		cookiePreviewText = getPreview()
+	}
+
 	function incrementPreviewRow() {
 		let sheetLength = sheetOne.getData().length
 
@@ -144,7 +201,7 @@
 		<button on:click={showEmail}>Start Drafting</button>
 	{/if}
 
-	{#if step == 1}
+	{#if step >= 1}
 	<div class="instructions">
 		<p>Compose your email below, leaving [TK stuff] to be replaced in the table. Make sure each TK is a single word: no spaces allowed!</p>
 	</div>
@@ -164,12 +221,17 @@
 		<p>Now, fill in the fields for each user. (You can also copy-paste rows and columns directly from Air, if the ordering is right!)</p>
 	</div>
 	{/if}
-	<div id="editor" bind:this={editor}></div>
 
 	{#if step == 1}
 	<button on:click={showSheet}>Next</button>
 	{/if}
 
+	{#if step > 1}
+	<button on:click={refreshSheet}>Refresh</button>
+	{/if}
+
+	<div id="editor" bind:this={editor}></div>
+
 	{#if step == 2 && !!cookiePreviewText}
 	<h4 class="mt-3">Preview</h4>
 	<div class="cookie-preview">{@html converter.makeHtml(cookiePreviewText)}</div>